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cec736d2 LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2011 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
cec736d2 LP |
11 | (at your option) any later version. |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 16 | Lesser General Public License for more details. |
cec736d2 | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
cec736d2 LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
22 | #include <sys/mman.h> | |
23 | #include <errno.h> | |
24 | #include <sys/uio.h> | |
25 | #include <unistd.h> | |
26 | #include <sys/statvfs.h> | |
27 | #include <fcntl.h> | |
28 | #include <stddef.h> | |
29 | ||
fb0951b0 LP |
30 | #ifdef HAVE_XATTR |
31 | #include <attr/xattr.h> | |
32 | #endif | |
33 | ||
cec736d2 LP |
34 | #include "journal-def.h" |
35 | #include "journal-file.h" | |
0284adc6 | 36 | #include "journal-authenticate.h" |
cec736d2 | 37 | #include "lookup3.h" |
807e17f0 | 38 | #include "compress.h" |
7560fffc | 39 | #include "fsprg.h" |
cec736d2 | 40 | |
4a92baf3 LP |
41 | #define DEFAULT_DATA_HASH_TABLE_SIZE (2047ULL*sizeof(HashItem)) |
42 | #define DEFAULT_FIELD_HASH_TABLE_SIZE (333ULL*sizeof(HashItem)) | |
cec736d2 | 43 | |
be19b7df | 44 | #define COMPRESSION_SIZE_THRESHOLD (512ULL) |
807e17f0 | 45 | |
babfc091 | 46 | /* This is the minimum journal file size */ |
b47ffcfd | 47 | #define JOURNAL_FILE_SIZE_MIN (64ULL*1024ULL) /* 64 KiB */ |
babfc091 LP |
48 | |
49 | /* These are the lower and upper bounds if we deduce the max_use value | |
50 | * from the file system size */ | |
51 | #define DEFAULT_MAX_USE_LOWER (1ULL*1024ULL*1024ULL) /* 1 MiB */ | |
52 | #define DEFAULT_MAX_USE_UPPER (4ULL*1024ULL*1024ULL*1024ULL) /* 4 GiB */ | |
53 | ||
54 | /* This is the upper bound if we deduce max_size from max_use */ | |
71100051 | 55 | #define DEFAULT_MAX_SIZE_UPPER (128ULL*1024ULL*1024ULL) /* 128 MiB */ |
babfc091 LP |
56 | |
57 | /* This is the upper bound if we deduce the keep_free value from the | |
58 | * file system size */ | |
59 | #define DEFAULT_KEEP_FREE_UPPER (4ULL*1024ULL*1024ULL*1024ULL) /* 4 GiB */ | |
60 | ||
61 | /* This is the keep_free value when we can't determine the system | |
62 | * size */ | |
63 | #define DEFAULT_KEEP_FREE (1024ULL*1024ULL) /* 1 MB */ | |
64 | ||
dca6219e LP |
65 | /* n_data was the first entry we added after the initial file format design */ |
66 | #define HEADER_SIZE_MIN ALIGN64(offsetof(Header, n_data)) | |
cec736d2 | 67 | |
cec736d2 | 68 | void journal_file_close(JournalFile *f) { |
de190aef | 69 | assert(f); |
cec736d2 | 70 | |
feb12d3e | 71 | #ifdef HAVE_GCRYPT |
b0af6f41 | 72 | /* Write the final tag */ |
c586dbf1 | 73 | if (f->seal && f->writable) |
b0af6f41 | 74 | journal_file_append_tag(f); |
feb12d3e | 75 | #endif |
b0af6f41 | 76 | |
7560fffc | 77 | /* Sync everything to disk, before we mark the file offline */ |
16e9f408 LP |
78 | if (f->mmap && f->fd >= 0) |
79 | mmap_cache_close_fd(f->mmap, f->fd); | |
7560fffc LP |
80 | |
81 | if (f->writable && f->fd >= 0) | |
82 | fdatasync(f->fd); | |
83 | ||
d384c7a8 | 84 | if (f->header) { |
cd96b3b8 LP |
85 | /* Mark the file offline. Don't override the archived state if it already is set */ |
86 | if (f->writable && f->header->state == STATE_ONLINE) | |
d384c7a8 | 87 | f->header->state = STATE_OFFLINE; |
cec736d2 | 88 | |
d384c7a8 MS |
89 | munmap(f->header, PAGE_ALIGN(sizeof(Header))); |
90 | } | |
cec736d2 | 91 | |
0ac38b70 LP |
92 | if (f->fd >= 0) |
93 | close_nointr_nofail(f->fd); | |
94 | ||
cec736d2 | 95 | free(f->path); |
807e17f0 | 96 | |
16e9f408 LP |
97 | if (f->mmap) |
98 | mmap_cache_unref(f->mmap); | |
99 | ||
807e17f0 LP |
100 | #ifdef HAVE_XZ |
101 | free(f->compress_buffer); | |
102 | #endif | |
103 | ||
7560fffc | 104 | #ifdef HAVE_GCRYPT |
baed47c3 LP |
105 | if (f->fss_file) |
106 | munmap(f->fss_file, PAGE_ALIGN(f->fss_file_size)); | |
b7c9ae91 LP |
107 | else if (f->fsprg_state) |
108 | free(f->fsprg_state); | |
109 | ||
110 | free(f->fsprg_seed); | |
7560fffc LP |
111 | |
112 | if (f->hmac) | |
113 | gcry_md_close(f->hmac); | |
114 | #endif | |
115 | ||
cec736d2 LP |
116 | free(f); |
117 | } | |
118 | ||
0ac38b70 | 119 | static int journal_file_init_header(JournalFile *f, JournalFile *template) { |
cec736d2 LP |
120 | Header h; |
121 | ssize_t k; | |
122 | int r; | |
123 | ||
124 | assert(f); | |
125 | ||
126 | zero(h); | |
7560fffc | 127 | memcpy(h.signature, HEADER_SIGNATURE, 8); |
23b0b2b2 | 128 | h.header_size = htole64(ALIGN64(sizeof(h))); |
cec736d2 | 129 | |
7560fffc LP |
130 | h.incompatible_flags = |
131 | htole32(f->compress ? HEADER_INCOMPATIBLE_COMPRESSED : 0); | |
132 | ||
133 | h.compatible_flags = | |
baed47c3 | 134 | htole32(f->seal ? HEADER_COMPATIBLE_SEALED : 0); |
7560fffc | 135 | |
cec736d2 LP |
136 | r = sd_id128_randomize(&h.file_id); |
137 | if (r < 0) | |
138 | return r; | |
139 | ||
0ac38b70 LP |
140 | if (template) { |
141 | h.seqnum_id = template->header->seqnum_id; | |
beec0085 | 142 | h.tail_entry_seqnum = template->header->tail_entry_seqnum; |
0ac38b70 LP |
143 | } else |
144 | h.seqnum_id = h.file_id; | |
cec736d2 LP |
145 | |
146 | k = pwrite(f->fd, &h, sizeof(h), 0); | |
147 | if (k < 0) | |
148 | return -errno; | |
149 | ||
150 | if (k != sizeof(h)) | |
151 | return -EIO; | |
152 | ||
153 | return 0; | |
154 | } | |
155 | ||
156 | static int journal_file_refresh_header(JournalFile *f) { | |
157 | int r; | |
de190aef | 158 | sd_id128_t boot_id; |
cec736d2 LP |
159 | |
160 | assert(f); | |
161 | ||
162 | r = sd_id128_get_machine(&f->header->machine_id); | |
163 | if (r < 0) | |
164 | return r; | |
165 | ||
de190aef | 166 | r = sd_id128_get_boot(&boot_id); |
cec736d2 LP |
167 | if (r < 0) |
168 | return r; | |
169 | ||
de190aef LP |
170 | if (sd_id128_equal(boot_id, f->header->boot_id)) |
171 | f->tail_entry_monotonic_valid = true; | |
172 | ||
173 | f->header->boot_id = boot_id; | |
174 | ||
175 | f->header->state = STATE_ONLINE; | |
b788cc23 | 176 | |
7560fffc LP |
177 | /* Sync the online state to disk */ |
178 | msync(f->header, PAGE_ALIGN(sizeof(Header)), MS_SYNC); | |
179 | fdatasync(f->fd); | |
b788cc23 | 180 | |
cec736d2 LP |
181 | return 0; |
182 | } | |
183 | ||
184 | static int journal_file_verify_header(JournalFile *f) { | |
185 | assert(f); | |
186 | ||
7560fffc | 187 | if (memcmp(f->header->signature, HEADER_SIGNATURE, 8)) |
cec736d2 LP |
188 | return -EBADMSG; |
189 | ||
7560fffc LP |
190 | /* In both read and write mode we refuse to open files with |
191 | * incompatible flags we don't know */ | |
807e17f0 | 192 | #ifdef HAVE_XZ |
7560fffc | 193 | if ((le32toh(f->header->incompatible_flags) & ~HEADER_INCOMPATIBLE_COMPRESSED) != 0) |
807e17f0 LP |
194 | return -EPROTONOSUPPORT; |
195 | #else | |
cec736d2 LP |
196 | if (f->header->incompatible_flags != 0) |
197 | return -EPROTONOSUPPORT; | |
807e17f0 | 198 | #endif |
cec736d2 | 199 | |
7560fffc LP |
200 | /* When open for writing we refuse to open files with |
201 | * compatible flags, too */ | |
202 | if (f->writable) { | |
203 | #ifdef HAVE_GCRYPT | |
baed47c3 | 204 | if ((le32toh(f->header->compatible_flags) & ~HEADER_COMPATIBLE_SEALED) != 0) |
7560fffc LP |
205 | return -EPROTONOSUPPORT; |
206 | #else | |
207 | if (f->header->compatible_flags != 0) | |
208 | return -EPROTONOSUPPORT; | |
209 | #endif | |
210 | } | |
211 | ||
db11ac1a LP |
212 | if (f->header->state >= _STATE_MAX) |
213 | return -EBADMSG; | |
214 | ||
dca6219e LP |
215 | /* The first addition was n_data, so check that we are at least this large */ |
216 | if (le64toh(f->header->header_size) < HEADER_SIZE_MIN) | |
23b0b2b2 LP |
217 | return -EBADMSG; |
218 | ||
8088cbd3 | 219 | if (JOURNAL_HEADER_SEALED(f->header) && !JOURNAL_HEADER_CONTAINS(f->header, n_entry_arrays)) |
beec0085 LP |
220 | return -EBADMSG; |
221 | ||
db11ac1a LP |
222 | if ((le64toh(f->header->header_size) + le64toh(f->header->arena_size)) > (uint64_t) f->last_stat.st_size) |
223 | return -ENODATA; | |
224 | ||
225 | if (le64toh(f->header->tail_object_offset) > (le64toh(f->header->header_size) + le64toh(f->header->arena_size))) | |
226 | return -ENODATA; | |
227 | ||
7762e02b LP |
228 | if (!VALID64(le64toh(f->header->data_hash_table_offset)) || |
229 | !VALID64(le64toh(f->header->field_hash_table_offset)) || | |
230 | !VALID64(le64toh(f->header->tail_object_offset)) || | |
231 | !VALID64(le64toh(f->header->entry_array_offset))) | |
232 | return -ENODATA; | |
233 | ||
234 | if (le64toh(f->header->data_hash_table_offset) < le64toh(f->header->header_size) || | |
235 | le64toh(f->header->field_hash_table_offset) < le64toh(f->header->header_size) || | |
236 | le64toh(f->header->tail_object_offset) < le64toh(f->header->header_size) || | |
237 | le64toh(f->header->entry_array_offset) < le64toh(f->header->header_size)) | |
cec736d2 LP |
238 | return -ENODATA; |
239 | ||
240 | if (f->writable) { | |
ccdbaf91 | 241 | uint8_t state; |
cec736d2 LP |
242 | sd_id128_t machine_id; |
243 | int r; | |
244 | ||
245 | r = sd_id128_get_machine(&machine_id); | |
246 | if (r < 0) | |
247 | return r; | |
248 | ||
249 | if (!sd_id128_equal(machine_id, f->header->machine_id)) | |
250 | return -EHOSTDOWN; | |
251 | ||
de190aef | 252 | state = f->header->state; |
cec736d2 | 253 | |
71fa6f00 LP |
254 | if (state == STATE_ONLINE) { |
255 | log_debug("Journal file %s is already online. Assuming unclean closing.", f->path); | |
256 | return -EBUSY; | |
257 | } else if (state == STATE_ARCHIVED) | |
cec736d2 | 258 | return -ESHUTDOWN; |
71fa6f00 LP |
259 | else if (state != STATE_OFFLINE) { |
260 | log_debug("Journal file %s has unknown state %u.", f->path, state); | |
261 | return -EBUSY; | |
262 | } | |
cec736d2 LP |
263 | } |
264 | ||
8088cbd3 | 265 | f->compress = JOURNAL_HEADER_COMPRESSED(f->header); |
c586dbf1 | 266 | |
f1889c91 | 267 | f->seal = JOURNAL_HEADER_SEALED(f->header); |
7560fffc | 268 | |
cec736d2 LP |
269 | return 0; |
270 | } | |
271 | ||
272 | static int journal_file_allocate(JournalFile *f, uint64_t offset, uint64_t size) { | |
cec736d2 | 273 | uint64_t old_size, new_size; |
fec2aa2f | 274 | int r; |
cec736d2 LP |
275 | |
276 | assert(f); | |
277 | ||
cec736d2 | 278 | /* We assume that this file is not sparse, and we know that |
38ac38b2 | 279 | * for sure, since we always call posix_fallocate() |
cec736d2 LP |
280 | * ourselves */ |
281 | ||
282 | old_size = | |
23b0b2b2 | 283 | le64toh(f->header->header_size) + |
cec736d2 LP |
284 | le64toh(f->header->arena_size); |
285 | ||
bc85bfee | 286 | new_size = PAGE_ALIGN(offset + size); |
23b0b2b2 LP |
287 | if (new_size < le64toh(f->header->header_size)) |
288 | new_size = le64toh(f->header->header_size); | |
bc85bfee LP |
289 | |
290 | if (new_size <= old_size) | |
cec736d2 LP |
291 | return 0; |
292 | ||
bc85bfee LP |
293 | if (f->metrics.max_size > 0 && |
294 | new_size > f->metrics.max_size) | |
295 | return -E2BIG; | |
cec736d2 | 296 | |
bc85bfee LP |
297 | if (new_size > f->metrics.min_size && |
298 | f->metrics.keep_free > 0) { | |
cec736d2 LP |
299 | struct statvfs svfs; |
300 | ||
301 | if (fstatvfs(f->fd, &svfs) >= 0) { | |
302 | uint64_t available; | |
303 | ||
304 | available = svfs.f_bfree * svfs.f_bsize; | |
305 | ||
bc85bfee LP |
306 | if (available >= f->metrics.keep_free) |
307 | available -= f->metrics.keep_free; | |
cec736d2 LP |
308 | else |
309 | available = 0; | |
310 | ||
311 | if (new_size - old_size > available) | |
312 | return -E2BIG; | |
313 | } | |
314 | } | |
315 | ||
bc85bfee LP |
316 | /* Note that the glibc fallocate() fallback is very |
317 | inefficient, hence we try to minimize the allocation area | |
318 | as we can. */ | |
fec2aa2f GV |
319 | r = posix_fallocate(f->fd, old_size, new_size - old_size); |
320 | if (r != 0) | |
321 | return -r; | |
cec736d2 LP |
322 | |
323 | if (fstat(f->fd, &f->last_stat) < 0) | |
324 | return -errno; | |
325 | ||
23b0b2b2 | 326 | f->header->arena_size = htole64(new_size - le64toh(f->header->header_size)); |
cec736d2 LP |
327 | |
328 | return 0; | |
329 | } | |
330 | ||
fcde2389 | 331 | static int journal_file_move_to(JournalFile *f, int context, bool keep_always, uint64_t offset, uint64_t size, void **ret) { |
cec736d2 | 332 | assert(f); |
cec736d2 LP |
333 | assert(ret); |
334 | ||
7762e02b LP |
335 | if (size <= 0) |
336 | return -EINVAL; | |
337 | ||
2a59ea54 | 338 | /* Avoid SIGBUS on invalid accesses */ |
4bbdcdb3 LP |
339 | if (offset + size > (uint64_t) f->last_stat.st_size) { |
340 | /* Hmm, out of range? Let's refresh the fstat() data | |
341 | * first, before we trust that check. */ | |
342 | ||
343 | if (fstat(f->fd, &f->last_stat) < 0 || | |
344 | offset + size > (uint64_t) f->last_stat.st_size) | |
345 | return -EADDRNOTAVAIL; | |
346 | } | |
347 | ||
fcde2389 | 348 | return mmap_cache_get(f->mmap, f->fd, f->prot, context, keep_always, offset, size, &f->last_stat, ret); |
cec736d2 LP |
349 | } |
350 | ||
16e9f408 LP |
351 | static uint64_t minimum_header_size(Object *o) { |
352 | ||
353 | static uint64_t table[] = { | |
354 | [OBJECT_DATA] = sizeof(DataObject), | |
355 | [OBJECT_FIELD] = sizeof(FieldObject), | |
356 | [OBJECT_ENTRY] = sizeof(EntryObject), | |
357 | [OBJECT_DATA_HASH_TABLE] = sizeof(HashTableObject), | |
358 | [OBJECT_FIELD_HASH_TABLE] = sizeof(HashTableObject), | |
359 | [OBJECT_ENTRY_ARRAY] = sizeof(EntryArrayObject), | |
360 | [OBJECT_TAG] = sizeof(TagObject), | |
361 | }; | |
362 | ||
363 | if (o->object.type >= ELEMENTSOF(table) || table[o->object.type] <= 0) | |
364 | return sizeof(ObjectHeader); | |
365 | ||
366 | return table[o->object.type]; | |
367 | } | |
368 | ||
de190aef | 369 | int journal_file_move_to_object(JournalFile *f, int type, uint64_t offset, Object **ret) { |
cec736d2 LP |
370 | int r; |
371 | void *t; | |
372 | Object *o; | |
373 | uint64_t s; | |
16e9f408 | 374 | unsigned context; |
cec736d2 LP |
375 | |
376 | assert(f); | |
377 | assert(ret); | |
378 | ||
db11ac1a LP |
379 | /* Objects may only be located at multiple of 64 bit */ |
380 | if (!VALID64(offset)) | |
381 | return -EFAULT; | |
382 | ||
16e9f408 LP |
383 | /* One context for each type, plus one catch-all for the rest */ |
384 | context = type > 0 && type < _OBJECT_TYPE_MAX ? type : 0; | |
385 | ||
fcde2389 | 386 | r = journal_file_move_to(f, context, false, offset, sizeof(ObjectHeader), &t); |
cec736d2 LP |
387 | if (r < 0) |
388 | return r; | |
389 | ||
390 | o = (Object*) t; | |
391 | s = le64toh(o->object.size); | |
392 | ||
393 | if (s < sizeof(ObjectHeader)) | |
394 | return -EBADMSG; | |
395 | ||
16e9f408 LP |
396 | if (o->object.type <= OBJECT_UNUSED) |
397 | return -EBADMSG; | |
398 | ||
399 | if (s < minimum_header_size(o)) | |
400 | return -EBADMSG; | |
401 | ||
3c1668da | 402 | if (type > 0 && o->object.type != type) |
cec736d2 LP |
403 | return -EBADMSG; |
404 | ||
405 | if (s > sizeof(ObjectHeader)) { | |
fcde2389 | 406 | r = journal_file_move_to(f, o->object.type, false, offset, s, &t); |
cec736d2 LP |
407 | if (r < 0) |
408 | return r; | |
409 | ||
410 | o = (Object*) t; | |
411 | } | |
412 | ||
cec736d2 LP |
413 | *ret = o; |
414 | return 0; | |
415 | } | |
416 | ||
d98cc1f2 | 417 | static uint64_t journal_file_entry_seqnum(JournalFile *f, uint64_t *seqnum) { |
cec736d2 LP |
418 | uint64_t r; |
419 | ||
420 | assert(f); | |
421 | ||
beec0085 | 422 | r = le64toh(f->header->tail_entry_seqnum) + 1; |
c2373f84 LP |
423 | |
424 | if (seqnum) { | |
de190aef | 425 | /* If an external seqnum counter was passed, we update |
c2373f84 LP |
426 | * both the local and the external one, and set it to |
427 | * the maximum of both */ | |
428 | ||
429 | if (*seqnum + 1 > r) | |
430 | r = *seqnum + 1; | |
431 | ||
432 | *seqnum = r; | |
433 | } | |
434 | ||
beec0085 | 435 | f->header->tail_entry_seqnum = htole64(r); |
cec736d2 | 436 | |
beec0085 LP |
437 | if (f->header->head_entry_seqnum == 0) |
438 | f->header->head_entry_seqnum = htole64(r); | |
de190aef | 439 | |
cec736d2 LP |
440 | return r; |
441 | } | |
442 | ||
0284adc6 | 443 | int journal_file_append_object(JournalFile *f, int type, uint64_t size, Object **ret, uint64_t *offset) { |
cec736d2 LP |
444 | int r; |
445 | uint64_t p; | |
446 | Object *tail, *o; | |
447 | void *t; | |
448 | ||
449 | assert(f); | |
16e9f408 | 450 | assert(type > 0 && type < _OBJECT_TYPE_MAX); |
cec736d2 LP |
451 | assert(size >= sizeof(ObjectHeader)); |
452 | assert(offset); | |
453 | assert(ret); | |
454 | ||
455 | p = le64toh(f->header->tail_object_offset); | |
cec736d2 | 456 | if (p == 0) |
23b0b2b2 | 457 | p = le64toh(f->header->header_size); |
cec736d2 | 458 | else { |
de190aef | 459 | r = journal_file_move_to_object(f, -1, p, &tail); |
cec736d2 LP |
460 | if (r < 0) |
461 | return r; | |
462 | ||
463 | p += ALIGN64(le64toh(tail->object.size)); | |
464 | } | |
465 | ||
466 | r = journal_file_allocate(f, p, size); | |
467 | if (r < 0) | |
468 | return r; | |
469 | ||
fcde2389 | 470 | r = journal_file_move_to(f, type, false, p, size, &t); |
cec736d2 LP |
471 | if (r < 0) |
472 | return r; | |
473 | ||
474 | o = (Object*) t; | |
475 | ||
476 | zero(o->object); | |
de190aef | 477 | o->object.type = type; |
cec736d2 LP |
478 | o->object.size = htole64(size); |
479 | ||
480 | f->header->tail_object_offset = htole64(p); | |
cec736d2 LP |
481 | f->header->n_objects = htole64(le64toh(f->header->n_objects) + 1); |
482 | ||
483 | *ret = o; | |
484 | *offset = p; | |
485 | ||
486 | return 0; | |
487 | } | |
488 | ||
de190aef | 489 | static int journal_file_setup_data_hash_table(JournalFile *f) { |
cec736d2 LP |
490 | uint64_t s, p; |
491 | Object *o; | |
492 | int r; | |
493 | ||
494 | assert(f); | |
495 | ||
dfabe643 | 496 | /* We estimate that we need 1 hash table entry per 768 of |
4a92baf3 LP |
497 | journal file and we want to make sure we never get beyond |
498 | 75% fill level. Calculate the hash table size for the | |
499 | maximum file size based on these metrics. */ | |
500 | ||
dfabe643 | 501 | s = (f->metrics.max_size * 4 / 768 / 3) * sizeof(HashItem); |
4a92baf3 LP |
502 | if (s < DEFAULT_DATA_HASH_TABLE_SIZE) |
503 | s = DEFAULT_DATA_HASH_TABLE_SIZE; | |
504 | ||
2b43f939 | 505 | log_debug("Reserving %llu entries in hash table.", (unsigned long long) (s / sizeof(HashItem))); |
4a92baf3 | 506 | |
de190aef LP |
507 | r = journal_file_append_object(f, |
508 | OBJECT_DATA_HASH_TABLE, | |
509 | offsetof(Object, hash_table.items) + s, | |
510 | &o, &p); | |
cec736d2 LP |
511 | if (r < 0) |
512 | return r; | |
513 | ||
de190aef | 514 | memset(o->hash_table.items, 0, s); |
cec736d2 | 515 | |
de190aef LP |
516 | f->header->data_hash_table_offset = htole64(p + offsetof(Object, hash_table.items)); |
517 | f->header->data_hash_table_size = htole64(s); | |
cec736d2 LP |
518 | |
519 | return 0; | |
520 | } | |
521 | ||
de190aef | 522 | static int journal_file_setup_field_hash_table(JournalFile *f) { |
cec736d2 LP |
523 | uint64_t s, p; |
524 | Object *o; | |
525 | int r; | |
526 | ||
527 | assert(f); | |
528 | ||
3c1668da LP |
529 | /* We use a fixed size hash table for the fields as this |
530 | * number should grow very slowly only */ | |
531 | ||
de190aef LP |
532 | s = DEFAULT_FIELD_HASH_TABLE_SIZE; |
533 | r = journal_file_append_object(f, | |
534 | OBJECT_FIELD_HASH_TABLE, | |
535 | offsetof(Object, hash_table.items) + s, | |
536 | &o, &p); | |
cec736d2 LP |
537 | if (r < 0) |
538 | return r; | |
539 | ||
de190aef | 540 | memset(o->hash_table.items, 0, s); |
cec736d2 | 541 | |
de190aef LP |
542 | f->header->field_hash_table_offset = htole64(p + offsetof(Object, hash_table.items)); |
543 | f->header->field_hash_table_size = htole64(s); | |
cec736d2 LP |
544 | |
545 | return 0; | |
546 | } | |
547 | ||
de190aef | 548 | static int journal_file_map_data_hash_table(JournalFile *f) { |
cec736d2 LP |
549 | uint64_t s, p; |
550 | void *t; | |
551 | int r; | |
552 | ||
553 | assert(f); | |
554 | ||
de190aef LP |
555 | p = le64toh(f->header->data_hash_table_offset); |
556 | s = le64toh(f->header->data_hash_table_size); | |
cec736d2 | 557 | |
de190aef | 558 | r = journal_file_move_to(f, |
16e9f408 | 559 | OBJECT_DATA_HASH_TABLE, |
fcde2389 | 560 | true, |
de190aef LP |
561 | p, s, |
562 | &t); | |
cec736d2 LP |
563 | if (r < 0) |
564 | return r; | |
565 | ||
de190aef | 566 | f->data_hash_table = t; |
cec736d2 LP |
567 | return 0; |
568 | } | |
569 | ||
de190aef | 570 | static int journal_file_map_field_hash_table(JournalFile *f) { |
cec736d2 LP |
571 | uint64_t s, p; |
572 | void *t; | |
573 | int r; | |
574 | ||
575 | assert(f); | |
576 | ||
de190aef LP |
577 | p = le64toh(f->header->field_hash_table_offset); |
578 | s = le64toh(f->header->field_hash_table_size); | |
cec736d2 | 579 | |
de190aef | 580 | r = journal_file_move_to(f, |
16e9f408 | 581 | OBJECT_FIELD_HASH_TABLE, |
fcde2389 | 582 | true, |
de190aef LP |
583 | p, s, |
584 | &t); | |
cec736d2 LP |
585 | if (r < 0) |
586 | return r; | |
587 | ||
de190aef | 588 | f->field_hash_table = t; |
cec736d2 LP |
589 | return 0; |
590 | } | |
591 | ||
3c1668da LP |
592 | static int journal_file_link_field( |
593 | JournalFile *f, | |
594 | Object *o, | |
595 | uint64_t offset, | |
596 | uint64_t hash) { | |
597 | ||
598 | uint64_t p, h; | |
599 | int r; | |
600 | ||
601 | assert(f); | |
602 | assert(o); | |
603 | assert(offset > 0); | |
604 | ||
605 | if (o->object.type != OBJECT_FIELD) | |
606 | return -EINVAL; | |
607 | ||
608 | /* This might alter the window we are looking at */ | |
609 | ||
610 | o->field.next_hash_offset = o->field.head_data_offset = 0; | |
611 | ||
612 | h = hash % (le64toh(f->header->field_hash_table_size) / sizeof(HashItem)); | |
613 | p = le64toh(f->field_hash_table[h].tail_hash_offset); | |
614 | if (p == 0) | |
615 | f->field_hash_table[h].head_hash_offset = htole64(offset); | |
616 | else { | |
617 | r = journal_file_move_to_object(f, OBJECT_FIELD, p, &o); | |
618 | if (r < 0) | |
619 | return r; | |
620 | ||
621 | o->field.next_hash_offset = htole64(offset); | |
622 | } | |
623 | ||
624 | f->field_hash_table[h].tail_hash_offset = htole64(offset); | |
625 | ||
626 | if (JOURNAL_HEADER_CONTAINS(f->header, n_fields)) | |
627 | f->header->n_fields = htole64(le64toh(f->header->n_fields) + 1); | |
628 | ||
629 | return 0; | |
630 | } | |
631 | ||
632 | static int journal_file_link_data( | |
633 | JournalFile *f, | |
634 | Object *o, | |
635 | uint64_t offset, | |
636 | uint64_t hash) { | |
637 | ||
de190aef | 638 | uint64_t p, h; |
cec736d2 LP |
639 | int r; |
640 | ||
641 | assert(f); | |
642 | assert(o); | |
643 | assert(offset > 0); | |
b588975f LP |
644 | |
645 | if (o->object.type != OBJECT_DATA) | |
646 | return -EINVAL; | |
cec736d2 | 647 | |
48496df6 LP |
648 | /* This might alter the window we are looking at */ |
649 | ||
de190aef LP |
650 | o->data.next_hash_offset = o->data.next_field_offset = 0; |
651 | o->data.entry_offset = o->data.entry_array_offset = 0; | |
652 | o->data.n_entries = 0; | |
cec736d2 | 653 | |
de190aef | 654 | h = hash % (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)); |
8db4213e | 655 | p = le64toh(f->data_hash_table[h].tail_hash_offset); |
3c1668da | 656 | if (p == 0) |
cec736d2 | 657 | /* Only entry in the hash table is easy */ |
de190aef | 658 | f->data_hash_table[h].head_hash_offset = htole64(offset); |
3c1668da | 659 | else { |
48496df6 LP |
660 | /* Move back to the previous data object, to patch in |
661 | * pointer */ | |
cec736d2 | 662 | |
de190aef | 663 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
cec736d2 LP |
664 | if (r < 0) |
665 | return r; | |
666 | ||
de190aef | 667 | o->data.next_hash_offset = htole64(offset); |
cec736d2 LP |
668 | } |
669 | ||
de190aef | 670 | f->data_hash_table[h].tail_hash_offset = htole64(offset); |
cec736d2 | 671 | |
dca6219e LP |
672 | if (JOURNAL_HEADER_CONTAINS(f->header, n_data)) |
673 | f->header->n_data = htole64(le64toh(f->header->n_data) + 1); | |
674 | ||
cec736d2 LP |
675 | return 0; |
676 | } | |
677 | ||
3c1668da LP |
678 | int journal_file_find_field_object_with_hash( |
679 | JournalFile *f, | |
680 | const void *field, uint64_t size, uint64_t hash, | |
681 | Object **ret, uint64_t *offset) { | |
682 | ||
683 | uint64_t p, osize, h; | |
684 | int r; | |
685 | ||
686 | assert(f); | |
687 | assert(field && size > 0); | |
688 | ||
689 | osize = offsetof(Object, field.payload) + size; | |
690 | ||
691 | if (f->header->field_hash_table_size == 0) | |
692 | return -EBADMSG; | |
693 | ||
694 | h = hash % (le64toh(f->header->field_hash_table_size) / sizeof(HashItem)); | |
695 | p = le64toh(f->field_hash_table[h].head_hash_offset); | |
696 | ||
697 | while (p > 0) { | |
698 | Object *o; | |
699 | ||
700 | r = journal_file_move_to_object(f, OBJECT_FIELD, p, &o); | |
701 | if (r < 0) | |
702 | return r; | |
703 | ||
704 | if (le64toh(o->field.hash) == hash && | |
705 | le64toh(o->object.size) == osize && | |
706 | memcmp(o->field.payload, field, size) == 0) { | |
707 | ||
708 | if (ret) | |
709 | *ret = o; | |
710 | if (offset) | |
711 | *offset = p; | |
712 | ||
713 | return 1; | |
714 | } | |
715 | ||
716 | p = le64toh(o->field.next_hash_offset); | |
717 | } | |
718 | ||
719 | return 0; | |
720 | } | |
721 | ||
722 | int journal_file_find_field_object( | |
723 | JournalFile *f, | |
724 | const void *field, uint64_t size, | |
725 | Object **ret, uint64_t *offset) { | |
726 | ||
727 | uint64_t hash; | |
728 | ||
729 | assert(f); | |
730 | assert(field && size > 0); | |
731 | ||
732 | hash = hash64(field, size); | |
733 | ||
734 | return journal_file_find_field_object_with_hash(f, | |
735 | field, size, hash, | |
736 | ret, offset); | |
737 | } | |
738 | ||
de190aef LP |
739 | int journal_file_find_data_object_with_hash( |
740 | JournalFile *f, | |
741 | const void *data, uint64_t size, uint64_t hash, | |
742 | Object **ret, uint64_t *offset) { | |
48496df6 | 743 | |
de190aef | 744 | uint64_t p, osize, h; |
cec736d2 LP |
745 | int r; |
746 | ||
747 | assert(f); | |
748 | assert(data || size == 0); | |
749 | ||
750 | osize = offsetof(Object, data.payload) + size; | |
751 | ||
bc85bfee LP |
752 | if (f->header->data_hash_table_size == 0) |
753 | return -EBADMSG; | |
754 | ||
de190aef LP |
755 | h = hash % (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)); |
756 | p = le64toh(f->data_hash_table[h].head_hash_offset); | |
cec736d2 | 757 | |
de190aef LP |
758 | while (p > 0) { |
759 | Object *o; | |
cec736d2 | 760 | |
de190aef | 761 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
cec736d2 LP |
762 | if (r < 0) |
763 | return r; | |
764 | ||
807e17f0 | 765 | if (le64toh(o->data.hash) != hash) |
85a131e8 | 766 | goto next; |
807e17f0 LP |
767 | |
768 | if (o->object.flags & OBJECT_COMPRESSED) { | |
769 | #ifdef HAVE_XZ | |
b785c858 | 770 | uint64_t l, rsize; |
cec736d2 | 771 | |
807e17f0 LP |
772 | l = le64toh(o->object.size); |
773 | if (l <= offsetof(Object, data.payload)) | |
cec736d2 LP |
774 | return -EBADMSG; |
775 | ||
807e17f0 LP |
776 | l -= offsetof(Object, data.payload); |
777 | ||
778 | if (!uncompress_blob(o->data.payload, l, &f->compress_buffer, &f->compress_buffer_size, &rsize)) | |
779 | return -EBADMSG; | |
780 | ||
b785c858 | 781 | if (rsize == size && |
807e17f0 LP |
782 | memcmp(f->compress_buffer, data, size) == 0) { |
783 | ||
784 | if (ret) | |
785 | *ret = o; | |
786 | ||
787 | if (offset) | |
788 | *offset = p; | |
789 | ||
790 | return 1; | |
791 | } | |
792 | #else | |
793 | return -EPROTONOSUPPORT; | |
794 | #endif | |
795 | ||
796 | } else if (le64toh(o->object.size) == osize && | |
797 | memcmp(o->data.payload, data, size) == 0) { | |
798 | ||
cec736d2 LP |
799 | if (ret) |
800 | *ret = o; | |
801 | ||
802 | if (offset) | |
803 | *offset = p; | |
804 | ||
de190aef | 805 | return 1; |
cec736d2 LP |
806 | } |
807 | ||
85a131e8 | 808 | next: |
cec736d2 LP |
809 | p = le64toh(o->data.next_hash_offset); |
810 | } | |
811 | ||
de190aef LP |
812 | return 0; |
813 | } | |
814 | ||
815 | int journal_file_find_data_object( | |
816 | JournalFile *f, | |
817 | const void *data, uint64_t size, | |
818 | Object **ret, uint64_t *offset) { | |
819 | ||
820 | uint64_t hash; | |
821 | ||
822 | assert(f); | |
823 | assert(data || size == 0); | |
824 | ||
825 | hash = hash64(data, size); | |
826 | ||
827 | return journal_file_find_data_object_with_hash(f, | |
828 | data, size, hash, | |
829 | ret, offset); | |
830 | } | |
831 | ||
3c1668da LP |
832 | static int journal_file_append_field( |
833 | JournalFile *f, | |
834 | const void *field, uint64_t size, | |
835 | Object **ret, uint64_t *offset) { | |
836 | ||
837 | uint64_t hash, p; | |
838 | uint64_t osize; | |
839 | Object *o; | |
840 | int r; | |
841 | ||
842 | assert(f); | |
843 | assert(field && size > 0); | |
844 | ||
845 | hash = hash64(field, size); | |
846 | ||
847 | r = journal_file_find_field_object_with_hash(f, field, size, hash, &o, &p); | |
848 | if (r < 0) | |
849 | return r; | |
850 | else if (r > 0) { | |
851 | ||
852 | if (ret) | |
853 | *ret = o; | |
854 | ||
855 | if (offset) | |
856 | *offset = p; | |
857 | ||
858 | return 0; | |
859 | } | |
860 | ||
861 | osize = offsetof(Object, field.payload) + size; | |
862 | r = journal_file_append_object(f, OBJECT_FIELD, osize, &o, &p); | |
863 | ||
864 | o->field.hash = htole64(hash); | |
865 | memcpy(o->field.payload, field, size); | |
866 | ||
867 | r = journal_file_link_field(f, o, p, hash); | |
868 | if (r < 0) | |
869 | return r; | |
870 | ||
871 | /* The linking might have altered the window, so let's | |
872 | * refresh our pointer */ | |
873 | r = journal_file_move_to_object(f, OBJECT_FIELD, p, &o); | |
874 | if (r < 0) | |
875 | return r; | |
876 | ||
877 | #ifdef HAVE_GCRYPT | |
878 | r = journal_file_hmac_put_object(f, OBJECT_FIELD, o, p); | |
879 | if (r < 0) | |
880 | return r; | |
881 | #endif | |
882 | ||
883 | if (ret) | |
884 | *ret = o; | |
885 | ||
886 | if (offset) | |
887 | *offset = p; | |
888 | ||
889 | return 0; | |
890 | } | |
891 | ||
48496df6 LP |
892 | static int journal_file_append_data( |
893 | JournalFile *f, | |
894 | const void *data, uint64_t size, | |
895 | Object **ret, uint64_t *offset) { | |
896 | ||
de190aef LP |
897 | uint64_t hash, p; |
898 | uint64_t osize; | |
899 | Object *o; | |
900 | int r; | |
807e17f0 | 901 | bool compressed = false; |
3c1668da | 902 | const void *eq; |
de190aef LP |
903 | |
904 | assert(f); | |
905 | assert(data || size == 0); | |
906 | ||
907 | hash = hash64(data, size); | |
908 | ||
909 | r = journal_file_find_data_object_with_hash(f, data, size, hash, &o, &p); | |
910 | if (r < 0) | |
911 | return r; | |
912 | else if (r > 0) { | |
913 | ||
914 | if (ret) | |
915 | *ret = o; | |
916 | ||
917 | if (offset) | |
918 | *offset = p; | |
919 | ||
920 | return 0; | |
921 | } | |
922 | ||
923 | osize = offsetof(Object, data.payload) + size; | |
924 | r = journal_file_append_object(f, OBJECT_DATA, osize, &o, &p); | |
cec736d2 LP |
925 | if (r < 0) |
926 | return r; | |
927 | ||
cec736d2 | 928 | o->data.hash = htole64(hash); |
807e17f0 LP |
929 | |
930 | #ifdef HAVE_XZ | |
931 | if (f->compress && | |
932 | size >= COMPRESSION_SIZE_THRESHOLD) { | |
933 | uint64_t rsize; | |
934 | ||
935 | compressed = compress_blob(data, size, o->data.payload, &rsize); | |
936 | ||
937 | if (compressed) { | |
938 | o->object.size = htole64(offsetof(Object, data.payload) + rsize); | |
939 | o->object.flags |= OBJECT_COMPRESSED; | |
940 | ||
807e17f0 LP |
941 | log_debug("Compressed data object %lu -> %lu", (unsigned long) size, (unsigned long) rsize); |
942 | } | |
943 | } | |
944 | #endif | |
945 | ||
64825d3c | 946 | if (!compressed && size > 0) |
807e17f0 | 947 | memcpy(o->data.payload, data, size); |
cec736d2 | 948 | |
de190aef | 949 | r = journal_file_link_data(f, o, p, hash); |
cec736d2 LP |
950 | if (r < 0) |
951 | return r; | |
952 | ||
48496df6 LP |
953 | /* The linking might have altered the window, so let's |
954 | * refresh our pointer */ | |
955 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
956 | if (r < 0) | |
957 | return r; | |
958 | ||
3c1668da LP |
959 | eq = memchr(data, '=', size); |
960 | if (eq && eq > data) { | |
961 | uint64_t fp; | |
962 | Object *fo; | |
963 | ||
964 | /* Create field object ... */ | |
965 | r = journal_file_append_field(f, data, (uint8_t*) eq - (uint8_t*) data, &fo, &fp); | |
966 | if (r < 0) | |
967 | return r; | |
968 | ||
969 | /* ... and link it in. */ | |
970 | o->data.next_field_offset = fo->field.head_data_offset; | |
971 | fo->field.head_data_offset = le64toh(p); | |
972 | } | |
973 | ||
5996c7c2 LP |
974 | #ifdef HAVE_GCRYPT |
975 | r = journal_file_hmac_put_object(f, OBJECT_DATA, o, p); | |
976 | if (r < 0) | |
977 | return r; | |
978 | #endif | |
979 | ||
cec736d2 LP |
980 | if (ret) |
981 | *ret = o; | |
982 | ||
983 | if (offset) | |
de190aef | 984 | *offset = p; |
cec736d2 LP |
985 | |
986 | return 0; | |
987 | } | |
988 | ||
989 | uint64_t journal_file_entry_n_items(Object *o) { | |
990 | assert(o); | |
b588975f LP |
991 | |
992 | if (o->object.type != OBJECT_ENTRY) | |
993 | return 0; | |
cec736d2 LP |
994 | |
995 | return (le64toh(o->object.size) - offsetof(Object, entry.items)) / sizeof(EntryItem); | |
996 | } | |
997 | ||
0284adc6 | 998 | uint64_t journal_file_entry_array_n_items(Object *o) { |
de190aef | 999 | assert(o); |
b588975f LP |
1000 | |
1001 | if (o->object.type != OBJECT_ENTRY_ARRAY) | |
1002 | return 0; | |
de190aef LP |
1003 | |
1004 | return (le64toh(o->object.size) - offsetof(Object, entry_array.items)) / sizeof(uint64_t); | |
1005 | } | |
1006 | ||
fb9a24b6 LP |
1007 | uint64_t journal_file_hash_table_n_items(Object *o) { |
1008 | assert(o); | |
b588975f LP |
1009 | |
1010 | if (o->object.type != OBJECT_DATA_HASH_TABLE && | |
1011 | o->object.type != OBJECT_FIELD_HASH_TABLE) | |
1012 | return 0; | |
fb9a24b6 LP |
1013 | |
1014 | return (le64toh(o->object.size) - offsetof(Object, hash_table.items)) / sizeof(HashItem); | |
1015 | } | |
1016 | ||
de190aef | 1017 | static int link_entry_into_array(JournalFile *f, |
4fd052ae FC |
1018 | le64_t *first, |
1019 | le64_t *idx, | |
de190aef | 1020 | uint64_t p) { |
cec736d2 | 1021 | int r; |
de190aef LP |
1022 | uint64_t n = 0, ap = 0, q, i, a, hidx; |
1023 | Object *o; | |
1024 | ||
cec736d2 | 1025 | assert(f); |
de190aef LP |
1026 | assert(first); |
1027 | assert(idx); | |
1028 | assert(p > 0); | |
cec736d2 | 1029 | |
de190aef LP |
1030 | a = le64toh(*first); |
1031 | i = hidx = le64toh(*idx); | |
1032 | while (a > 0) { | |
1033 | ||
1034 | r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, a, &o); | |
1035 | if (r < 0) | |
1036 | return r; | |
cec736d2 | 1037 | |
de190aef LP |
1038 | n = journal_file_entry_array_n_items(o); |
1039 | if (i < n) { | |
1040 | o->entry_array.items[i] = htole64(p); | |
1041 | *idx = htole64(hidx + 1); | |
1042 | return 0; | |
1043 | } | |
cec736d2 | 1044 | |
de190aef LP |
1045 | i -= n; |
1046 | ap = a; | |
1047 | a = le64toh(o->entry_array.next_entry_array_offset); | |
1048 | } | |
1049 | ||
1050 | if (hidx > n) | |
1051 | n = (hidx+1) * 2; | |
1052 | else | |
1053 | n = n * 2; | |
1054 | ||
1055 | if (n < 4) | |
1056 | n = 4; | |
1057 | ||
1058 | r = journal_file_append_object(f, OBJECT_ENTRY_ARRAY, | |
1059 | offsetof(Object, entry_array.items) + n * sizeof(uint64_t), | |
1060 | &o, &q); | |
cec736d2 LP |
1061 | if (r < 0) |
1062 | return r; | |
1063 | ||
feb12d3e | 1064 | #ifdef HAVE_GCRYPT |
5996c7c2 | 1065 | r = journal_file_hmac_put_object(f, OBJECT_ENTRY_ARRAY, o, q); |
b0af6f41 LP |
1066 | if (r < 0) |
1067 | return r; | |
feb12d3e | 1068 | #endif |
b0af6f41 | 1069 | |
de190aef | 1070 | o->entry_array.items[i] = htole64(p); |
cec736d2 | 1071 | |
de190aef | 1072 | if (ap == 0) |
7be3aa17 | 1073 | *first = htole64(q); |
cec736d2 | 1074 | else { |
de190aef | 1075 | r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, ap, &o); |
cec736d2 LP |
1076 | if (r < 0) |
1077 | return r; | |
1078 | ||
de190aef LP |
1079 | o->entry_array.next_entry_array_offset = htole64(q); |
1080 | } | |
cec736d2 | 1081 | |
2dee23eb LP |
1082 | if (JOURNAL_HEADER_CONTAINS(f->header, n_entry_arrays)) |
1083 | f->header->n_entry_arrays = htole64(le64toh(f->header->n_entry_arrays) + 1); | |
1084 | ||
de190aef LP |
1085 | *idx = htole64(hidx + 1); |
1086 | ||
1087 | return 0; | |
1088 | } | |
cec736d2 | 1089 | |
de190aef | 1090 | static int link_entry_into_array_plus_one(JournalFile *f, |
4fd052ae FC |
1091 | le64_t *extra, |
1092 | le64_t *first, | |
1093 | le64_t *idx, | |
de190aef LP |
1094 | uint64_t p) { |
1095 | ||
1096 | int r; | |
1097 | ||
1098 | assert(f); | |
1099 | assert(extra); | |
1100 | assert(first); | |
1101 | assert(idx); | |
1102 | assert(p > 0); | |
1103 | ||
1104 | if (*idx == 0) | |
1105 | *extra = htole64(p); | |
1106 | else { | |
4fd052ae | 1107 | le64_t i; |
de190aef | 1108 | |
7be3aa17 | 1109 | i = htole64(le64toh(*idx) - 1); |
de190aef LP |
1110 | r = link_entry_into_array(f, first, &i, p); |
1111 | if (r < 0) | |
1112 | return r; | |
cec736d2 LP |
1113 | } |
1114 | ||
de190aef LP |
1115 | *idx = htole64(le64toh(*idx) + 1); |
1116 | return 0; | |
1117 | } | |
1118 | ||
1119 | static int journal_file_link_entry_item(JournalFile *f, Object *o, uint64_t offset, uint64_t i) { | |
1120 | uint64_t p; | |
1121 | int r; | |
1122 | assert(f); | |
1123 | assert(o); | |
1124 | assert(offset > 0); | |
1125 | ||
1126 | p = le64toh(o->entry.items[i].object_offset); | |
1127 | if (p == 0) | |
1128 | return -EINVAL; | |
1129 | ||
1130 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
cec736d2 LP |
1131 | if (r < 0) |
1132 | return r; | |
1133 | ||
de190aef LP |
1134 | return link_entry_into_array_plus_one(f, |
1135 | &o->data.entry_offset, | |
1136 | &o->data.entry_array_offset, | |
1137 | &o->data.n_entries, | |
1138 | offset); | |
cec736d2 LP |
1139 | } |
1140 | ||
1141 | static int journal_file_link_entry(JournalFile *f, Object *o, uint64_t offset) { | |
de190aef | 1142 | uint64_t n, i; |
cec736d2 LP |
1143 | int r; |
1144 | ||
1145 | assert(f); | |
1146 | assert(o); | |
1147 | assert(offset > 0); | |
b588975f LP |
1148 | |
1149 | if (o->object.type != OBJECT_ENTRY) | |
1150 | return -EINVAL; | |
cec736d2 | 1151 | |
b788cc23 LP |
1152 | __sync_synchronize(); |
1153 | ||
cec736d2 | 1154 | /* Link up the entry itself */ |
de190aef LP |
1155 | r = link_entry_into_array(f, |
1156 | &f->header->entry_array_offset, | |
1157 | &f->header->n_entries, | |
1158 | offset); | |
1159 | if (r < 0) | |
1160 | return r; | |
cec736d2 | 1161 | |
aaf53376 | 1162 | /* log_debug("=> %s seqnr=%lu n_entries=%lu", f->path, (unsigned long) o->entry.seqnum, (unsigned long) f->header->n_entries); */ |
cec736d2 | 1163 | |
de190aef | 1164 | if (f->header->head_entry_realtime == 0) |
0ac38b70 | 1165 | f->header->head_entry_realtime = o->entry.realtime; |
cec736d2 | 1166 | |
0ac38b70 | 1167 | f->header->tail_entry_realtime = o->entry.realtime; |
de190aef LP |
1168 | f->header->tail_entry_monotonic = o->entry.monotonic; |
1169 | ||
1170 | f->tail_entry_monotonic_valid = true; | |
cec736d2 LP |
1171 | |
1172 | /* Link up the items */ | |
1173 | n = journal_file_entry_n_items(o); | |
1174 | for (i = 0; i < n; i++) { | |
1175 | r = journal_file_link_entry_item(f, o, offset, i); | |
1176 | if (r < 0) | |
1177 | return r; | |
1178 | } | |
1179 | ||
cec736d2 LP |
1180 | return 0; |
1181 | } | |
1182 | ||
1183 | static int journal_file_append_entry_internal( | |
1184 | JournalFile *f, | |
1185 | const dual_timestamp *ts, | |
1186 | uint64_t xor_hash, | |
1187 | const EntryItem items[], unsigned n_items, | |
de190aef | 1188 | uint64_t *seqnum, |
cec736d2 LP |
1189 | Object **ret, uint64_t *offset) { |
1190 | uint64_t np; | |
1191 | uint64_t osize; | |
1192 | Object *o; | |
1193 | int r; | |
1194 | ||
1195 | assert(f); | |
1196 | assert(items || n_items == 0); | |
de190aef | 1197 | assert(ts); |
cec736d2 LP |
1198 | |
1199 | osize = offsetof(Object, entry.items) + (n_items * sizeof(EntryItem)); | |
1200 | ||
de190aef | 1201 | r = journal_file_append_object(f, OBJECT_ENTRY, osize, &o, &np); |
cec736d2 LP |
1202 | if (r < 0) |
1203 | return r; | |
1204 | ||
d98cc1f2 | 1205 | o->entry.seqnum = htole64(journal_file_entry_seqnum(f, seqnum)); |
cec736d2 | 1206 | memcpy(o->entry.items, items, n_items * sizeof(EntryItem)); |
de190aef LP |
1207 | o->entry.realtime = htole64(ts->realtime); |
1208 | o->entry.monotonic = htole64(ts->monotonic); | |
cec736d2 LP |
1209 | o->entry.xor_hash = htole64(xor_hash); |
1210 | o->entry.boot_id = f->header->boot_id; | |
1211 | ||
feb12d3e | 1212 | #ifdef HAVE_GCRYPT |
5996c7c2 | 1213 | r = journal_file_hmac_put_object(f, OBJECT_ENTRY, o, np); |
b0af6f41 LP |
1214 | if (r < 0) |
1215 | return r; | |
feb12d3e | 1216 | #endif |
b0af6f41 | 1217 | |
cec736d2 LP |
1218 | r = journal_file_link_entry(f, o, np); |
1219 | if (r < 0) | |
1220 | return r; | |
1221 | ||
1222 | if (ret) | |
1223 | *ret = o; | |
1224 | ||
1225 | if (offset) | |
1226 | *offset = np; | |
1227 | ||
1228 | return 0; | |
1229 | } | |
1230 | ||
cf244689 | 1231 | void journal_file_post_change(JournalFile *f) { |
50f20cfd LP |
1232 | assert(f); |
1233 | ||
1234 | /* inotify() does not receive IN_MODIFY events from file | |
1235 | * accesses done via mmap(). After each access we hence | |
1236 | * trigger IN_MODIFY by truncating the journal file to its | |
1237 | * current size which triggers IN_MODIFY. */ | |
1238 | ||
bc85bfee LP |
1239 | __sync_synchronize(); |
1240 | ||
50f20cfd | 1241 | if (ftruncate(f->fd, f->last_stat.st_size) < 0) |
c5315881 | 1242 | log_error("Failed to truncate file to its own size: %m"); |
50f20cfd LP |
1243 | } |
1244 | ||
1f2da9ec LP |
1245 | static int entry_item_cmp(const void *_a, const void *_b) { |
1246 | const EntryItem *a = _a, *b = _b; | |
1247 | ||
1248 | if (le64toh(a->object_offset) < le64toh(b->object_offset)) | |
1249 | return -1; | |
1250 | if (le64toh(a->object_offset) > le64toh(b->object_offset)) | |
1251 | return 1; | |
1252 | return 0; | |
1253 | } | |
1254 | ||
de190aef | 1255 | int journal_file_append_entry(JournalFile *f, const dual_timestamp *ts, const struct iovec iovec[], unsigned n_iovec, uint64_t *seqnum, Object **ret, uint64_t *offset) { |
cec736d2 LP |
1256 | unsigned i; |
1257 | EntryItem *items; | |
1258 | int r; | |
1259 | uint64_t xor_hash = 0; | |
de190aef | 1260 | struct dual_timestamp _ts; |
cec736d2 LP |
1261 | |
1262 | assert(f); | |
1263 | assert(iovec || n_iovec == 0); | |
1264 | ||
de190aef LP |
1265 | if (!f->writable) |
1266 | return -EPERM; | |
1267 | ||
1268 | if (!ts) { | |
1269 | dual_timestamp_get(&_ts); | |
1270 | ts = &_ts; | |
1271 | } | |
1272 | ||
1273 | if (f->tail_entry_monotonic_valid && | |
1274 | ts->monotonic < le64toh(f->header->tail_entry_monotonic)) | |
1275 | return -EINVAL; | |
1276 | ||
feb12d3e | 1277 | #ifdef HAVE_GCRYPT |
7560fffc LP |
1278 | r = journal_file_maybe_append_tag(f, ts->realtime); |
1279 | if (r < 0) | |
1280 | return r; | |
feb12d3e | 1281 | #endif |
7560fffc | 1282 | |
64825d3c LP |
1283 | /* alloca() can't take 0, hence let's allocate at least one */ |
1284 | items = alloca(sizeof(EntryItem) * MAX(1, n_iovec)); | |
cec736d2 LP |
1285 | |
1286 | for (i = 0; i < n_iovec; i++) { | |
1287 | uint64_t p; | |
1288 | Object *o; | |
1289 | ||
1290 | r = journal_file_append_data(f, iovec[i].iov_base, iovec[i].iov_len, &o, &p); | |
1291 | if (r < 0) | |
cf244689 | 1292 | return r; |
cec736d2 LP |
1293 | |
1294 | xor_hash ^= le64toh(o->data.hash); | |
1295 | items[i].object_offset = htole64(p); | |
de7b95cd | 1296 | items[i].hash = o->data.hash; |
cec736d2 LP |
1297 | } |
1298 | ||
1f2da9ec LP |
1299 | /* Order by the position on disk, in order to improve seek |
1300 | * times for rotating media. */ | |
1301 | qsort(items, n_iovec, sizeof(EntryItem), entry_item_cmp); | |
1302 | ||
de190aef | 1303 | r = journal_file_append_entry_internal(f, ts, xor_hash, items, n_iovec, seqnum, ret, offset); |
cec736d2 | 1304 | |
50f20cfd LP |
1305 | journal_file_post_change(f); |
1306 | ||
cec736d2 LP |
1307 | return r; |
1308 | } | |
1309 | ||
de190aef LP |
1310 | static int generic_array_get(JournalFile *f, |
1311 | uint64_t first, | |
1312 | uint64_t i, | |
1313 | Object **ret, uint64_t *offset) { | |
1314 | ||
cec736d2 | 1315 | Object *o; |
6c8a39b8 | 1316 | uint64_t p = 0, a; |
cec736d2 LP |
1317 | int r; |
1318 | ||
1319 | assert(f); | |
1320 | ||
de190aef LP |
1321 | a = first; |
1322 | while (a > 0) { | |
1323 | uint64_t n; | |
cec736d2 | 1324 | |
de190aef LP |
1325 | r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, a, &o); |
1326 | if (r < 0) | |
1327 | return r; | |
cec736d2 | 1328 | |
de190aef LP |
1329 | n = journal_file_entry_array_n_items(o); |
1330 | if (i < n) { | |
1331 | p = le64toh(o->entry_array.items[i]); | |
1332 | break; | |
cec736d2 LP |
1333 | } |
1334 | ||
de190aef LP |
1335 | i -= n; |
1336 | a = le64toh(o->entry_array.next_entry_array_offset); | |
1337 | } | |
1338 | ||
1339 | if (a <= 0 || p <= 0) | |
1340 | return 0; | |
1341 | ||
1342 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
1343 | if (r < 0) | |
1344 | return r; | |
1345 | ||
1346 | if (ret) | |
1347 | *ret = o; | |
1348 | ||
1349 | if (offset) | |
1350 | *offset = p; | |
1351 | ||
1352 | return 1; | |
1353 | } | |
1354 | ||
1355 | static int generic_array_get_plus_one(JournalFile *f, | |
1356 | uint64_t extra, | |
1357 | uint64_t first, | |
1358 | uint64_t i, | |
1359 | Object **ret, uint64_t *offset) { | |
1360 | ||
1361 | Object *o; | |
1362 | ||
1363 | assert(f); | |
1364 | ||
1365 | if (i == 0) { | |
1366 | int r; | |
1367 | ||
1368 | r = journal_file_move_to_object(f, OBJECT_ENTRY, extra, &o); | |
cec736d2 LP |
1369 | if (r < 0) |
1370 | return r; | |
1371 | ||
de190aef LP |
1372 | if (ret) |
1373 | *ret = o; | |
cec736d2 | 1374 | |
de190aef LP |
1375 | if (offset) |
1376 | *offset = extra; | |
cec736d2 | 1377 | |
de190aef | 1378 | return 1; |
cec736d2 LP |
1379 | } |
1380 | ||
de190aef LP |
1381 | return generic_array_get(f, first, i-1, ret, offset); |
1382 | } | |
cec736d2 | 1383 | |
de190aef LP |
1384 | enum { |
1385 | TEST_FOUND, | |
1386 | TEST_LEFT, | |
1387 | TEST_RIGHT | |
1388 | }; | |
cec736d2 | 1389 | |
de190aef LP |
1390 | static int generic_array_bisect(JournalFile *f, |
1391 | uint64_t first, | |
1392 | uint64_t n, | |
1393 | uint64_t needle, | |
1394 | int (*test_object)(JournalFile *f, uint64_t p, uint64_t needle), | |
1395 | direction_t direction, | |
1396 | Object **ret, | |
1397 | uint64_t *offset, | |
1398 | uint64_t *idx) { | |
1399 | ||
1400 | uint64_t a, p, t = 0, i = 0, last_p = 0; | |
1401 | bool subtract_one = false; | |
1402 | Object *o, *array = NULL; | |
1403 | int r; | |
cec736d2 | 1404 | |
de190aef LP |
1405 | assert(f); |
1406 | assert(test_object); | |
cec736d2 | 1407 | |
de190aef LP |
1408 | a = first; |
1409 | while (a > 0) { | |
1410 | uint64_t left, right, k, lp; | |
1411 | ||
1412 | r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, a, &array); | |
cec736d2 LP |
1413 | if (r < 0) |
1414 | return r; | |
1415 | ||
de190aef LP |
1416 | k = journal_file_entry_array_n_items(array); |
1417 | right = MIN(k, n); | |
1418 | if (right <= 0) | |
1419 | return 0; | |
cec736d2 | 1420 | |
de190aef LP |
1421 | i = right - 1; |
1422 | lp = p = le64toh(array->entry_array.items[i]); | |
1423 | if (p <= 0) | |
1424 | return -EBADMSG; | |
cec736d2 | 1425 | |
de190aef LP |
1426 | r = test_object(f, p, needle); |
1427 | if (r < 0) | |
1428 | return r; | |
cec736d2 | 1429 | |
de190aef LP |
1430 | if (r == TEST_FOUND) |
1431 | r = direction == DIRECTION_DOWN ? TEST_RIGHT : TEST_LEFT; | |
1432 | ||
1433 | if (r == TEST_RIGHT) { | |
1434 | left = 0; | |
1435 | right -= 1; | |
1436 | for (;;) { | |
1437 | if (left == right) { | |
1438 | if (direction == DIRECTION_UP) | |
1439 | subtract_one = true; | |
1440 | ||
1441 | i = left; | |
1442 | goto found; | |
1443 | } | |
1444 | ||
1445 | assert(left < right); | |
1446 | ||
1447 | i = (left + right) / 2; | |
1448 | p = le64toh(array->entry_array.items[i]); | |
1449 | if (p <= 0) | |
1450 | return -EBADMSG; | |
1451 | ||
1452 | r = test_object(f, p, needle); | |
1453 | if (r < 0) | |
1454 | return r; | |
cec736d2 | 1455 | |
de190aef LP |
1456 | if (r == TEST_FOUND) |
1457 | r = direction == DIRECTION_DOWN ? TEST_RIGHT : TEST_LEFT; | |
1458 | ||
1459 | if (r == TEST_RIGHT) | |
1460 | right = i; | |
1461 | else | |
1462 | left = i + 1; | |
1463 | } | |
1464 | } | |
1465 | ||
cbdca852 LP |
1466 | if (k > n) { |
1467 | if (direction == DIRECTION_UP) { | |
1468 | i = n; | |
1469 | subtract_one = true; | |
1470 | goto found; | |
1471 | } | |
1472 | ||
cec736d2 | 1473 | return 0; |
cbdca852 | 1474 | } |
cec736d2 | 1475 | |
de190aef LP |
1476 | last_p = lp; |
1477 | ||
1478 | n -= k; | |
1479 | t += k; | |
1480 | a = le64toh(array->entry_array.next_entry_array_offset); | |
cec736d2 LP |
1481 | } |
1482 | ||
1483 | return 0; | |
de190aef LP |
1484 | |
1485 | found: | |
1486 | if (subtract_one && t == 0 && i == 0) | |
1487 | return 0; | |
1488 | ||
1489 | if (subtract_one && i == 0) | |
1490 | p = last_p; | |
1491 | else if (subtract_one) | |
1492 | p = le64toh(array->entry_array.items[i-1]); | |
1493 | else | |
1494 | p = le64toh(array->entry_array.items[i]); | |
1495 | ||
1496 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
1497 | if (r < 0) | |
1498 | return r; | |
1499 | ||
1500 | if (ret) | |
1501 | *ret = o; | |
1502 | ||
1503 | if (offset) | |
1504 | *offset = p; | |
1505 | ||
1506 | if (idx) | |
cbdca852 | 1507 | *idx = t + i + (subtract_one ? -1 : 0); |
de190aef LP |
1508 | |
1509 | return 1; | |
cec736d2 LP |
1510 | } |
1511 | ||
de190aef LP |
1512 | static int generic_array_bisect_plus_one(JournalFile *f, |
1513 | uint64_t extra, | |
1514 | uint64_t first, | |
1515 | uint64_t n, | |
1516 | uint64_t needle, | |
1517 | int (*test_object)(JournalFile *f, uint64_t p, uint64_t needle), | |
1518 | direction_t direction, | |
1519 | Object **ret, | |
1520 | uint64_t *offset, | |
1521 | uint64_t *idx) { | |
1522 | ||
cec736d2 | 1523 | int r; |
cbdca852 LP |
1524 | bool step_back = false; |
1525 | Object *o; | |
cec736d2 LP |
1526 | |
1527 | assert(f); | |
de190aef | 1528 | assert(test_object); |
cec736d2 | 1529 | |
de190aef LP |
1530 | if (n <= 0) |
1531 | return 0; | |
cec736d2 | 1532 | |
de190aef LP |
1533 | /* This bisects the array in object 'first', but first checks |
1534 | * an extra */ | |
de190aef LP |
1535 | r = test_object(f, extra, needle); |
1536 | if (r < 0) | |
1537 | return r; | |
a536e261 LP |
1538 | |
1539 | if (r == TEST_FOUND) | |
1540 | r = direction == DIRECTION_DOWN ? TEST_RIGHT : TEST_LEFT; | |
1541 | ||
cbdca852 LP |
1542 | /* if we are looking with DIRECTION_UP then we need to first |
1543 | see if in the actual array there is a matching entry, and | |
1544 | return the last one of that. But if there isn't any we need | |
1545 | to return this one. Hence remember this, and return it | |
1546 | below. */ | |
1547 | if (r == TEST_LEFT) | |
1548 | step_back = direction == DIRECTION_UP; | |
de190aef | 1549 | |
cbdca852 LP |
1550 | if (r == TEST_RIGHT) { |
1551 | if (direction == DIRECTION_DOWN) | |
1552 | goto found; | |
1553 | else | |
1554 | return 0; | |
a536e261 | 1555 | } |
cec736d2 | 1556 | |
de190aef LP |
1557 | r = generic_array_bisect(f, first, n-1, needle, test_object, direction, ret, offset, idx); |
1558 | ||
cbdca852 LP |
1559 | if (r == 0 && step_back) |
1560 | goto found; | |
1561 | ||
ecf68b1d | 1562 | if (r > 0 && idx) |
de190aef LP |
1563 | (*idx) ++; |
1564 | ||
1565 | return r; | |
cbdca852 LP |
1566 | |
1567 | found: | |
1568 | r = journal_file_move_to_object(f, OBJECT_ENTRY, extra, &o); | |
1569 | if (r < 0) | |
1570 | return r; | |
1571 | ||
1572 | if (ret) | |
1573 | *ret = o; | |
1574 | ||
1575 | if (offset) | |
1576 | *offset = extra; | |
1577 | ||
1578 | if (idx) | |
1579 | *idx = 0; | |
1580 | ||
1581 | return 1; | |
1582 | } | |
1583 | ||
1584 | static int test_object_offset(JournalFile *f, uint64_t p, uint64_t needle) { | |
1585 | assert(f); | |
1586 | assert(p > 0); | |
1587 | ||
1588 | if (p == needle) | |
1589 | return TEST_FOUND; | |
1590 | else if (p < needle) | |
1591 | return TEST_LEFT; | |
1592 | else | |
1593 | return TEST_RIGHT; | |
1594 | } | |
1595 | ||
1596 | int journal_file_move_to_entry_by_offset( | |
1597 | JournalFile *f, | |
1598 | uint64_t p, | |
1599 | direction_t direction, | |
1600 | Object **ret, | |
1601 | uint64_t *offset) { | |
1602 | ||
1603 | return generic_array_bisect(f, | |
1604 | le64toh(f->header->entry_array_offset), | |
1605 | le64toh(f->header->n_entries), | |
1606 | p, | |
1607 | test_object_offset, | |
1608 | direction, | |
1609 | ret, offset, NULL); | |
de190aef LP |
1610 | } |
1611 | ||
cbdca852 | 1612 | |
de190aef LP |
1613 | static int test_object_seqnum(JournalFile *f, uint64_t p, uint64_t needle) { |
1614 | Object *o; | |
1615 | int r; | |
1616 | ||
1617 | assert(f); | |
1618 | assert(p > 0); | |
1619 | ||
1620 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
cec736d2 LP |
1621 | if (r < 0) |
1622 | return r; | |
1623 | ||
de190aef LP |
1624 | if (le64toh(o->entry.seqnum) == needle) |
1625 | return TEST_FOUND; | |
1626 | else if (le64toh(o->entry.seqnum) < needle) | |
1627 | return TEST_LEFT; | |
1628 | else | |
1629 | return TEST_RIGHT; | |
1630 | } | |
cec736d2 | 1631 | |
de190aef LP |
1632 | int journal_file_move_to_entry_by_seqnum( |
1633 | JournalFile *f, | |
1634 | uint64_t seqnum, | |
1635 | direction_t direction, | |
1636 | Object **ret, | |
1637 | uint64_t *offset) { | |
1638 | ||
1639 | return generic_array_bisect(f, | |
1640 | le64toh(f->header->entry_array_offset), | |
1641 | le64toh(f->header->n_entries), | |
1642 | seqnum, | |
1643 | test_object_seqnum, | |
1644 | direction, | |
1645 | ret, offset, NULL); | |
1646 | } | |
cec736d2 | 1647 | |
de190aef LP |
1648 | static int test_object_realtime(JournalFile *f, uint64_t p, uint64_t needle) { |
1649 | Object *o; | |
1650 | int r; | |
1651 | ||
1652 | assert(f); | |
1653 | assert(p > 0); | |
1654 | ||
1655 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
1656 | if (r < 0) | |
1657 | return r; | |
1658 | ||
1659 | if (le64toh(o->entry.realtime) == needle) | |
1660 | return TEST_FOUND; | |
1661 | else if (le64toh(o->entry.realtime) < needle) | |
1662 | return TEST_LEFT; | |
1663 | else | |
1664 | return TEST_RIGHT; | |
cec736d2 LP |
1665 | } |
1666 | ||
de190aef LP |
1667 | int journal_file_move_to_entry_by_realtime( |
1668 | JournalFile *f, | |
1669 | uint64_t realtime, | |
1670 | direction_t direction, | |
1671 | Object **ret, | |
1672 | uint64_t *offset) { | |
1673 | ||
1674 | return generic_array_bisect(f, | |
1675 | le64toh(f->header->entry_array_offset), | |
1676 | le64toh(f->header->n_entries), | |
1677 | realtime, | |
1678 | test_object_realtime, | |
1679 | direction, | |
1680 | ret, offset, NULL); | |
1681 | } | |
1682 | ||
1683 | static int test_object_monotonic(JournalFile *f, uint64_t p, uint64_t needle) { | |
1684 | Object *o; | |
1685 | int r; | |
1686 | ||
1687 | assert(f); | |
1688 | assert(p > 0); | |
1689 | ||
1690 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
1691 | if (r < 0) | |
1692 | return r; | |
1693 | ||
1694 | if (le64toh(o->entry.monotonic) == needle) | |
1695 | return TEST_FOUND; | |
1696 | else if (le64toh(o->entry.monotonic) < needle) | |
1697 | return TEST_LEFT; | |
1698 | else | |
1699 | return TEST_RIGHT; | |
1700 | } | |
1701 | ||
1702 | int journal_file_move_to_entry_by_monotonic( | |
1703 | JournalFile *f, | |
1704 | sd_id128_t boot_id, | |
1705 | uint64_t monotonic, | |
1706 | direction_t direction, | |
1707 | Object **ret, | |
1708 | uint64_t *offset) { | |
1709 | ||
10b6f904 | 1710 | char t[9+32+1] = "_BOOT_ID="; |
de190aef LP |
1711 | Object *o; |
1712 | int r; | |
1713 | ||
cbdca852 | 1714 | assert(f); |
de190aef | 1715 | |
cbdca852 | 1716 | sd_id128_to_string(boot_id, t + 9); |
de190aef LP |
1717 | r = journal_file_find_data_object(f, t, strlen(t), &o, NULL); |
1718 | if (r < 0) | |
1719 | return r; | |
cbdca852 | 1720 | if (r == 0) |
de190aef LP |
1721 | return -ENOENT; |
1722 | ||
1723 | return generic_array_bisect_plus_one(f, | |
1724 | le64toh(o->data.entry_offset), | |
1725 | le64toh(o->data.entry_array_offset), | |
1726 | le64toh(o->data.n_entries), | |
1727 | monotonic, | |
1728 | test_object_monotonic, | |
1729 | direction, | |
1730 | ret, offset, NULL); | |
1731 | } | |
1732 | ||
de190aef LP |
1733 | int journal_file_next_entry( |
1734 | JournalFile *f, | |
1735 | Object *o, uint64_t p, | |
1736 | direction_t direction, | |
1737 | Object **ret, uint64_t *offset) { | |
1738 | ||
1739 | uint64_t i, n; | |
cec736d2 LP |
1740 | int r; |
1741 | ||
1742 | assert(f); | |
de190aef LP |
1743 | assert(p > 0 || !o); |
1744 | ||
1745 | n = le64toh(f->header->n_entries); | |
1746 | if (n <= 0) | |
1747 | return 0; | |
cec736d2 LP |
1748 | |
1749 | if (!o) | |
de190aef | 1750 | i = direction == DIRECTION_DOWN ? 0 : n - 1; |
cec736d2 | 1751 | else { |
de190aef | 1752 | if (o->object.type != OBJECT_ENTRY) |
cec736d2 LP |
1753 | return -EINVAL; |
1754 | ||
de190aef LP |
1755 | r = generic_array_bisect(f, |
1756 | le64toh(f->header->entry_array_offset), | |
1757 | le64toh(f->header->n_entries), | |
1758 | p, | |
1759 | test_object_offset, | |
1760 | DIRECTION_DOWN, | |
1761 | NULL, NULL, | |
1762 | &i); | |
1763 | if (r <= 0) | |
1764 | return r; | |
1765 | ||
1766 | if (direction == DIRECTION_DOWN) { | |
1767 | if (i >= n - 1) | |
1768 | return 0; | |
1769 | ||
1770 | i++; | |
1771 | } else { | |
1772 | if (i <= 0) | |
1773 | return 0; | |
1774 | ||
1775 | i--; | |
1776 | } | |
cec736d2 LP |
1777 | } |
1778 | ||
de190aef LP |
1779 | /* And jump to it */ |
1780 | return generic_array_get(f, | |
1781 | le64toh(f->header->entry_array_offset), | |
1782 | i, | |
1783 | ret, offset); | |
1784 | } | |
cec736d2 | 1785 | |
de190aef LP |
1786 | int journal_file_skip_entry( |
1787 | JournalFile *f, | |
1788 | Object *o, uint64_t p, | |
1789 | int64_t skip, | |
1790 | Object **ret, uint64_t *offset) { | |
1791 | ||
1792 | uint64_t i, n; | |
1793 | int r; | |
1794 | ||
1795 | assert(f); | |
1796 | assert(o); | |
1797 | assert(p > 0); | |
1798 | ||
1799 | if (o->object.type != OBJECT_ENTRY) | |
1800 | return -EINVAL; | |
1801 | ||
1802 | r = generic_array_bisect(f, | |
1803 | le64toh(f->header->entry_array_offset), | |
1804 | le64toh(f->header->n_entries), | |
1805 | p, | |
1806 | test_object_offset, | |
1807 | DIRECTION_DOWN, | |
1808 | NULL, NULL, | |
1809 | &i); | |
1810 | if (r <= 0) | |
cec736d2 LP |
1811 | return r; |
1812 | ||
de190aef LP |
1813 | /* Calculate new index */ |
1814 | if (skip < 0) { | |
1815 | if ((uint64_t) -skip >= i) | |
1816 | i = 0; | |
1817 | else | |
1818 | i = i - (uint64_t) -skip; | |
1819 | } else | |
1820 | i += (uint64_t) skip; | |
cec736d2 | 1821 | |
de190aef LP |
1822 | n = le64toh(f->header->n_entries); |
1823 | if (n <= 0) | |
1824 | return -EBADMSG; | |
cec736d2 | 1825 | |
de190aef LP |
1826 | if (i >= n) |
1827 | i = n-1; | |
1828 | ||
1829 | return generic_array_get(f, | |
1830 | le64toh(f->header->entry_array_offset), | |
1831 | i, | |
1832 | ret, offset); | |
cec736d2 LP |
1833 | } |
1834 | ||
de190aef LP |
1835 | int journal_file_next_entry_for_data( |
1836 | JournalFile *f, | |
1837 | Object *o, uint64_t p, | |
1838 | uint64_t data_offset, | |
1839 | direction_t direction, | |
1840 | Object **ret, uint64_t *offset) { | |
1841 | ||
1842 | uint64_t n, i; | |
cec736d2 | 1843 | int r; |
de190aef | 1844 | Object *d; |
cec736d2 LP |
1845 | |
1846 | assert(f); | |
de190aef | 1847 | assert(p > 0 || !o); |
cec736d2 | 1848 | |
de190aef | 1849 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); |
466ccd92 | 1850 | if (r < 0) |
de190aef | 1851 | return r; |
cec736d2 | 1852 | |
de190aef LP |
1853 | n = le64toh(d->data.n_entries); |
1854 | if (n <= 0) | |
1855 | return n; | |
cec736d2 | 1856 | |
de190aef LP |
1857 | if (!o) |
1858 | i = direction == DIRECTION_DOWN ? 0 : n - 1; | |
1859 | else { | |
1860 | if (o->object.type != OBJECT_ENTRY) | |
1861 | return -EINVAL; | |
cec736d2 | 1862 | |
de190aef LP |
1863 | r = generic_array_bisect_plus_one(f, |
1864 | le64toh(d->data.entry_offset), | |
1865 | le64toh(d->data.entry_array_offset), | |
1866 | le64toh(d->data.n_entries), | |
1867 | p, | |
1868 | test_object_offset, | |
1869 | DIRECTION_DOWN, | |
1870 | NULL, NULL, | |
1871 | &i); | |
1872 | ||
1873 | if (r <= 0) | |
cec736d2 LP |
1874 | return r; |
1875 | ||
de190aef LP |
1876 | if (direction == DIRECTION_DOWN) { |
1877 | if (i >= n - 1) | |
1878 | return 0; | |
cec736d2 | 1879 | |
de190aef LP |
1880 | i++; |
1881 | } else { | |
1882 | if (i <= 0) | |
1883 | return 0; | |
cec736d2 | 1884 | |
de190aef LP |
1885 | i--; |
1886 | } | |
cec736d2 | 1887 | |
de190aef | 1888 | } |
cec736d2 | 1889 | |
de190aef LP |
1890 | return generic_array_get_plus_one(f, |
1891 | le64toh(d->data.entry_offset), | |
1892 | le64toh(d->data.entry_array_offset), | |
1893 | i, | |
1894 | ret, offset); | |
1895 | } | |
cec736d2 | 1896 | |
cbdca852 LP |
1897 | int journal_file_move_to_entry_by_offset_for_data( |
1898 | JournalFile *f, | |
1899 | uint64_t data_offset, | |
1900 | uint64_t p, | |
1901 | direction_t direction, | |
1902 | Object **ret, uint64_t *offset) { | |
1903 | ||
1904 | int r; | |
1905 | Object *d; | |
1906 | ||
1907 | assert(f); | |
1908 | ||
1909 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); | |
1910 | if (r < 0) | |
1911 | return r; | |
1912 | ||
1913 | return generic_array_bisect_plus_one(f, | |
1914 | le64toh(d->data.entry_offset), | |
1915 | le64toh(d->data.entry_array_offset), | |
1916 | le64toh(d->data.n_entries), | |
1917 | p, | |
1918 | test_object_offset, | |
1919 | direction, | |
1920 | ret, offset, NULL); | |
1921 | } | |
1922 | ||
1923 | int journal_file_move_to_entry_by_monotonic_for_data( | |
1924 | JournalFile *f, | |
1925 | uint64_t data_offset, | |
1926 | sd_id128_t boot_id, | |
1927 | uint64_t monotonic, | |
1928 | direction_t direction, | |
1929 | Object **ret, uint64_t *offset) { | |
1930 | ||
1931 | char t[9+32+1] = "_BOOT_ID="; | |
1932 | Object *o, *d; | |
1933 | int r; | |
1934 | uint64_t b, z; | |
1935 | ||
1936 | assert(f); | |
1937 | ||
1938 | /* First, seek by time */ | |
1939 | sd_id128_to_string(boot_id, t + 9); | |
1940 | r = journal_file_find_data_object(f, t, strlen(t), &o, &b); | |
1941 | if (r < 0) | |
1942 | return r; | |
1943 | if (r == 0) | |
1944 | return -ENOENT; | |
1945 | ||
1946 | r = generic_array_bisect_plus_one(f, | |
1947 | le64toh(o->data.entry_offset), | |
1948 | le64toh(o->data.entry_array_offset), | |
1949 | le64toh(o->data.n_entries), | |
1950 | monotonic, | |
1951 | test_object_monotonic, | |
1952 | direction, | |
1953 | NULL, &z, NULL); | |
1954 | if (r <= 0) | |
1955 | return r; | |
1956 | ||
1957 | /* And now, continue seeking until we find an entry that | |
1958 | * exists in both bisection arrays */ | |
1959 | ||
1960 | for (;;) { | |
1961 | Object *qo; | |
1962 | uint64_t p, q; | |
1963 | ||
1964 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); | |
1965 | if (r < 0) | |
1966 | return r; | |
1967 | ||
1968 | r = generic_array_bisect_plus_one(f, | |
1969 | le64toh(d->data.entry_offset), | |
1970 | le64toh(d->data.entry_array_offset), | |
1971 | le64toh(d->data.n_entries), | |
1972 | z, | |
1973 | test_object_offset, | |
1974 | direction, | |
1975 | NULL, &p, NULL); | |
1976 | if (r <= 0) | |
1977 | return r; | |
1978 | ||
1979 | r = journal_file_move_to_object(f, OBJECT_DATA, b, &o); | |
1980 | if (r < 0) | |
1981 | return r; | |
1982 | ||
1983 | r = generic_array_bisect_plus_one(f, | |
1984 | le64toh(o->data.entry_offset), | |
1985 | le64toh(o->data.entry_array_offset), | |
1986 | le64toh(o->data.n_entries), | |
1987 | p, | |
1988 | test_object_offset, | |
1989 | direction, | |
1990 | &qo, &q, NULL); | |
1991 | ||
1992 | if (r <= 0) | |
1993 | return r; | |
1994 | ||
1995 | if (p == q) { | |
1996 | if (ret) | |
1997 | *ret = qo; | |
1998 | if (offset) | |
1999 | *offset = q; | |
2000 | ||
2001 | return 1; | |
2002 | } | |
2003 | ||
2004 | z = q; | |
2005 | } | |
2006 | ||
2007 | return 0; | |
2008 | } | |
2009 | ||
de190aef LP |
2010 | int journal_file_move_to_entry_by_seqnum_for_data( |
2011 | JournalFile *f, | |
2012 | uint64_t data_offset, | |
2013 | uint64_t seqnum, | |
2014 | direction_t direction, | |
2015 | Object **ret, uint64_t *offset) { | |
cec736d2 | 2016 | |
de190aef LP |
2017 | Object *d; |
2018 | int r; | |
cec736d2 | 2019 | |
91a31dde LP |
2020 | assert(f); |
2021 | ||
de190aef | 2022 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); |
91a31dde | 2023 | if (r < 0) |
de190aef | 2024 | return r; |
cec736d2 | 2025 | |
de190aef LP |
2026 | return generic_array_bisect_plus_one(f, |
2027 | le64toh(d->data.entry_offset), | |
2028 | le64toh(d->data.entry_array_offset), | |
2029 | le64toh(d->data.n_entries), | |
2030 | seqnum, | |
2031 | test_object_seqnum, | |
2032 | direction, | |
2033 | ret, offset, NULL); | |
2034 | } | |
cec736d2 | 2035 | |
de190aef LP |
2036 | int journal_file_move_to_entry_by_realtime_for_data( |
2037 | JournalFile *f, | |
2038 | uint64_t data_offset, | |
2039 | uint64_t realtime, | |
2040 | direction_t direction, | |
2041 | Object **ret, uint64_t *offset) { | |
2042 | ||
2043 | Object *d; | |
2044 | int r; | |
2045 | ||
91a31dde LP |
2046 | assert(f); |
2047 | ||
de190aef | 2048 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); |
91a31dde | 2049 | if (r < 0) |
de190aef LP |
2050 | return r; |
2051 | ||
2052 | return generic_array_bisect_plus_one(f, | |
2053 | le64toh(d->data.entry_offset), | |
2054 | le64toh(d->data.entry_array_offset), | |
2055 | le64toh(d->data.n_entries), | |
2056 | realtime, | |
2057 | test_object_realtime, | |
2058 | direction, | |
2059 | ret, offset, NULL); | |
cec736d2 LP |
2060 | } |
2061 | ||
0284adc6 | 2062 | void journal_file_dump(JournalFile *f) { |
7560fffc | 2063 | Object *o; |
7560fffc | 2064 | int r; |
0284adc6 | 2065 | uint64_t p; |
7560fffc LP |
2066 | |
2067 | assert(f); | |
2068 | ||
0284adc6 | 2069 | journal_file_print_header(f); |
7560fffc | 2070 | |
0284adc6 LP |
2071 | p = le64toh(f->header->header_size); |
2072 | while (p != 0) { | |
2073 | r = journal_file_move_to_object(f, -1, p, &o); | |
2074 | if (r < 0) | |
2075 | goto fail; | |
7560fffc | 2076 | |
0284adc6 | 2077 | switch (o->object.type) { |
d98cc1f2 | 2078 | |
0284adc6 LP |
2079 | case OBJECT_UNUSED: |
2080 | printf("Type: OBJECT_UNUSED\n"); | |
2081 | break; | |
d98cc1f2 | 2082 | |
0284adc6 LP |
2083 | case OBJECT_DATA: |
2084 | printf("Type: OBJECT_DATA\n"); | |
2085 | break; | |
7560fffc | 2086 | |
3c1668da LP |
2087 | case OBJECT_FIELD: |
2088 | printf("Type: OBJECT_FIELD\n"); | |
2089 | break; | |
2090 | ||
0284adc6 | 2091 | case OBJECT_ENTRY: |
f7fab8a5 | 2092 | printf("Type: OBJECT_ENTRY seqnum=%llu monotonic=%llu realtime=%llu\n", |
0284adc6 LP |
2093 | (unsigned long long) le64toh(o->entry.seqnum), |
2094 | (unsigned long long) le64toh(o->entry.monotonic), | |
2095 | (unsigned long long) le64toh(o->entry.realtime)); | |
2096 | break; | |
7560fffc | 2097 | |
0284adc6 LP |
2098 | case OBJECT_FIELD_HASH_TABLE: |
2099 | printf("Type: OBJECT_FIELD_HASH_TABLE\n"); | |
2100 | break; | |
7560fffc | 2101 | |
0284adc6 LP |
2102 | case OBJECT_DATA_HASH_TABLE: |
2103 | printf("Type: OBJECT_DATA_HASH_TABLE\n"); | |
2104 | break; | |
7560fffc | 2105 | |
0284adc6 LP |
2106 | case OBJECT_ENTRY_ARRAY: |
2107 | printf("Type: OBJECT_ENTRY_ARRAY\n"); | |
2108 | break; | |
7560fffc | 2109 | |
0284adc6 | 2110 | case OBJECT_TAG: |
f7fab8a5 LP |
2111 | printf("Type: OBJECT_TAG seqnum=%llu epoch=%llu\n", |
2112 | (unsigned long long) le64toh(o->tag.seqnum), | |
2113 | (unsigned long long) le64toh(o->tag.epoch)); | |
0284adc6 | 2114 | break; |
3c1668da LP |
2115 | |
2116 | default: | |
2117 | printf("Type: unknown (%u)\n", o->object.type); | |
2118 | break; | |
0284adc6 | 2119 | } |
7560fffc | 2120 | |
0284adc6 LP |
2121 | if (o->object.flags & OBJECT_COMPRESSED) |
2122 | printf("Flags: COMPRESSED\n"); | |
7560fffc | 2123 | |
0284adc6 LP |
2124 | if (p == le64toh(f->header->tail_object_offset)) |
2125 | p = 0; | |
2126 | else | |
2127 | p = p + ALIGN64(le64toh(o->object.size)); | |
2128 | } | |
7560fffc | 2129 | |
0284adc6 LP |
2130 | return; |
2131 | fail: | |
2132 | log_error("File corrupt"); | |
7560fffc LP |
2133 | } |
2134 | ||
0284adc6 LP |
2135 | void journal_file_print_header(JournalFile *f) { |
2136 | char a[33], b[33], c[33]; | |
2137 | char x[FORMAT_TIMESTAMP_MAX], y[FORMAT_TIMESTAMP_MAX]; | |
a1a03e30 LP |
2138 | struct stat st; |
2139 | char bytes[FORMAT_BYTES_MAX]; | |
7560fffc LP |
2140 | |
2141 | assert(f); | |
7560fffc | 2142 | |
0284adc6 LP |
2143 | printf("File Path: %s\n" |
2144 | "File ID: %s\n" | |
2145 | "Machine ID: %s\n" | |
2146 | "Boot ID: %s\n" | |
2147 | "Sequential Number ID: %s\n" | |
2148 | "State: %s\n" | |
2149 | "Compatible Flags:%s%s\n" | |
2150 | "Incompatible Flags:%s%s\n" | |
2151 | "Header size: %llu\n" | |
2152 | "Arena size: %llu\n" | |
2153 | "Data Hash Table Size: %llu\n" | |
2154 | "Field Hash Table Size: %llu\n" | |
0284adc6 LP |
2155 | "Rotate Suggested: %s\n" |
2156 | "Head Sequential Number: %llu\n" | |
2157 | "Tail Sequential Number: %llu\n" | |
2158 | "Head Realtime Timestamp: %s\n" | |
3223f44f LP |
2159 | "Tail Realtime Timestamp: %s\n" |
2160 | "Objects: %llu\n" | |
2161 | "Entry Objects: %llu\n", | |
0284adc6 LP |
2162 | f->path, |
2163 | sd_id128_to_string(f->header->file_id, a), | |
2164 | sd_id128_to_string(f->header->machine_id, b), | |
2165 | sd_id128_to_string(f->header->boot_id, c), | |
2166 | sd_id128_to_string(f->header->seqnum_id, c), | |
3223f44f LP |
2167 | f->header->state == STATE_OFFLINE ? "OFFLINE" : |
2168 | f->header->state == STATE_ONLINE ? "ONLINE" : | |
2169 | f->header->state == STATE_ARCHIVED ? "ARCHIVED" : "UNKNOWN", | |
8088cbd3 LP |
2170 | JOURNAL_HEADER_SEALED(f->header) ? " SEALED" : "", |
2171 | (le32toh(f->header->compatible_flags) & ~HEADER_COMPATIBLE_SEALED) ? " ???" : "", | |
2172 | JOURNAL_HEADER_COMPRESSED(f->header) ? " COMPRESSED" : "", | |
2173 | (le32toh(f->header->incompatible_flags) & ~HEADER_INCOMPATIBLE_COMPRESSED) ? " ???" : "", | |
0284adc6 LP |
2174 | (unsigned long long) le64toh(f->header->header_size), |
2175 | (unsigned long long) le64toh(f->header->arena_size), | |
2176 | (unsigned long long) le64toh(f->header->data_hash_table_size) / sizeof(HashItem), | |
2177 | (unsigned long long) le64toh(f->header->field_hash_table_size) / sizeof(HashItem), | |
fb0951b0 | 2178 | yes_no(journal_file_rotate_suggested(f, 0)), |
0284adc6 LP |
2179 | (unsigned long long) le64toh(f->header->head_entry_seqnum), |
2180 | (unsigned long long) le64toh(f->header->tail_entry_seqnum), | |
2181 | format_timestamp(x, sizeof(x), le64toh(f->header->head_entry_realtime)), | |
3223f44f LP |
2182 | format_timestamp(y, sizeof(y), le64toh(f->header->tail_entry_realtime)), |
2183 | (unsigned long long) le64toh(f->header->n_objects), | |
2184 | (unsigned long long) le64toh(f->header->n_entries)); | |
7560fffc | 2185 | |
0284adc6 LP |
2186 | if (JOURNAL_HEADER_CONTAINS(f->header, n_data)) |
2187 | printf("Data Objects: %llu\n" | |
2188 | "Data Hash Table Fill: %.1f%%\n", | |
2189 | (unsigned long long) le64toh(f->header->n_data), | |
2190 | 100.0 * (double) le64toh(f->header->n_data) / ((double) (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)))); | |
7560fffc | 2191 | |
0284adc6 LP |
2192 | if (JOURNAL_HEADER_CONTAINS(f->header, n_fields)) |
2193 | printf("Field Objects: %llu\n" | |
2194 | "Field Hash Table Fill: %.1f%%\n", | |
2195 | (unsigned long long) le64toh(f->header->n_fields), | |
2196 | 100.0 * (double) le64toh(f->header->n_fields) / ((double) (le64toh(f->header->field_hash_table_size) / sizeof(HashItem)))); | |
3223f44f LP |
2197 | |
2198 | if (JOURNAL_HEADER_CONTAINS(f->header, n_tags)) | |
2199 | printf("Tag Objects: %llu\n", | |
2200 | (unsigned long long) le64toh(f->header->n_tags)); | |
2201 | if (JOURNAL_HEADER_CONTAINS(f->header, n_entry_arrays)) | |
2202 | printf("Entry Array Objects: %llu\n", | |
2203 | (unsigned long long) le64toh(f->header->n_entry_arrays)); | |
a1a03e30 LP |
2204 | |
2205 | if (fstat(f->fd, &st) >= 0) | |
2206 | printf("Disk usage: %s\n", format_bytes(bytes, sizeof(bytes), (off_t) st.st_blocks * 512ULL)); | |
7560fffc LP |
2207 | } |
2208 | ||
0284adc6 LP |
2209 | int journal_file_open( |
2210 | const char *fname, | |
2211 | int flags, | |
2212 | mode_t mode, | |
2213 | bool compress, | |
baed47c3 | 2214 | bool seal, |
0284adc6 LP |
2215 | JournalMetrics *metrics, |
2216 | MMapCache *mmap_cache, | |
2217 | JournalFile *template, | |
2218 | JournalFile **ret) { | |
7560fffc | 2219 | |
0284adc6 LP |
2220 | JournalFile *f; |
2221 | int r; | |
2222 | bool newly_created = false; | |
7560fffc | 2223 | |
0284adc6 | 2224 | assert(fname); |
0559d3a5 | 2225 | assert(ret); |
7560fffc | 2226 | |
0284adc6 LP |
2227 | if ((flags & O_ACCMODE) != O_RDONLY && |
2228 | (flags & O_ACCMODE) != O_RDWR) | |
2229 | return -EINVAL; | |
7560fffc | 2230 | |
a0108012 LP |
2231 | if (!endswith(fname, ".journal") && |
2232 | !endswith(fname, ".journal~")) | |
0284adc6 | 2233 | return -EINVAL; |
7560fffc | 2234 | |
0284adc6 LP |
2235 | f = new0(JournalFile, 1); |
2236 | if (!f) | |
2237 | return -ENOMEM; | |
7560fffc | 2238 | |
0284adc6 LP |
2239 | f->fd = -1; |
2240 | f->mode = mode; | |
7560fffc | 2241 | |
0284adc6 LP |
2242 | f->flags = flags; |
2243 | f->prot = prot_from_flags(flags); | |
2244 | f->writable = (flags & O_ACCMODE) != O_RDONLY; | |
48b61739 | 2245 | #ifdef HAVE_XZ |
0284adc6 | 2246 | f->compress = compress; |
48b61739 | 2247 | #endif |
49a32d43 | 2248 | #ifdef HAVE_GCRYPT |
baed47c3 | 2249 | f->seal = seal; |
49a32d43 | 2250 | #endif |
7560fffc | 2251 | |
0284adc6 LP |
2252 | if (mmap_cache) |
2253 | f->mmap = mmap_cache_ref(mmap_cache); | |
2254 | else { | |
84168d80 | 2255 | f->mmap = mmap_cache_new(); |
0284adc6 LP |
2256 | if (!f->mmap) { |
2257 | r = -ENOMEM; | |
2258 | goto fail; | |
2259 | } | |
2260 | } | |
7560fffc | 2261 | |
0284adc6 LP |
2262 | f->path = strdup(fname); |
2263 | if (!f->path) { | |
2264 | r = -ENOMEM; | |
2265 | goto fail; | |
2266 | } | |
7560fffc | 2267 | |
0284adc6 LP |
2268 | f->fd = open(f->path, f->flags|O_CLOEXEC, f->mode); |
2269 | if (f->fd < 0) { | |
2270 | r = -errno; | |
2271 | goto fail; | |
7560fffc | 2272 | } |
7560fffc | 2273 | |
0284adc6 LP |
2274 | if (fstat(f->fd, &f->last_stat) < 0) { |
2275 | r = -errno; | |
2276 | goto fail; | |
2277 | } | |
7560fffc | 2278 | |
0284adc6 | 2279 | if (f->last_stat.st_size == 0 && f->writable) { |
fb0951b0 LP |
2280 | #ifdef HAVE_XATTR |
2281 | uint64_t crtime; | |
2282 | ||
2283 | /* Let's attach the creation time to the journal file, | |
2284 | * so that the vacuuming code knows the age of this | |
2285 | * file even if the file might end up corrupted one | |
2286 | * day... Ideally we'd just use the creation time many | |
2287 | * file systems maintain for each file, but there is | |
2288 | * currently no usable API to query this, hence let's | |
2289 | * emulate this via extended attributes. If extended | |
2290 | * attributes are not supported we'll just skip this, | |
2291 | * and rely solely on mtime/atime/ctime of the file.*/ | |
2292 | ||
2293 | crtime = htole64((uint64_t) now(CLOCK_REALTIME)); | |
2294 | fsetxattr(f->fd, "user.crtime_usec", &crtime, sizeof(crtime), XATTR_CREATE); | |
2295 | #endif | |
7560fffc | 2296 | |
feb12d3e | 2297 | #ifdef HAVE_GCRYPT |
0284adc6 | 2298 | /* Try to load the FSPRG state, and if we can't, then |
baed47c3 | 2299 | * just don't do sealing */ |
49a32d43 LP |
2300 | if (f->seal) { |
2301 | r = journal_file_fss_load(f); | |
2302 | if (r < 0) | |
2303 | f->seal = false; | |
2304 | } | |
feb12d3e | 2305 | #endif |
7560fffc | 2306 | |
0284adc6 LP |
2307 | r = journal_file_init_header(f, template); |
2308 | if (r < 0) | |
2309 | goto fail; | |
7560fffc | 2310 | |
0284adc6 LP |
2311 | if (fstat(f->fd, &f->last_stat) < 0) { |
2312 | r = -errno; | |
2313 | goto fail; | |
2314 | } | |
fb0951b0 LP |
2315 | |
2316 | newly_created = true; | |
0284adc6 | 2317 | } |
7560fffc | 2318 | |
0284adc6 LP |
2319 | if (f->last_stat.st_size < (off_t) HEADER_SIZE_MIN) { |
2320 | r = -EIO; | |
2321 | goto fail; | |
2322 | } | |
7560fffc | 2323 | |
0284adc6 LP |
2324 | f->header = mmap(NULL, PAGE_ALIGN(sizeof(Header)), prot_from_flags(flags), MAP_SHARED, f->fd, 0); |
2325 | if (f->header == MAP_FAILED) { | |
2326 | f->header = NULL; | |
2327 | r = -errno; | |
2328 | goto fail; | |
2329 | } | |
7560fffc | 2330 | |
0284adc6 LP |
2331 | if (!newly_created) { |
2332 | r = journal_file_verify_header(f); | |
2333 | if (r < 0) | |
2334 | goto fail; | |
2335 | } | |
7560fffc | 2336 | |
feb12d3e | 2337 | #ifdef HAVE_GCRYPT |
0284adc6 | 2338 | if (!newly_created && f->writable) { |
baed47c3 | 2339 | r = journal_file_fss_load(f); |
0284adc6 LP |
2340 | if (r < 0) |
2341 | goto fail; | |
2342 | } | |
feb12d3e | 2343 | #endif |
cec736d2 LP |
2344 | |
2345 | if (f->writable) { | |
4a92baf3 LP |
2346 | if (metrics) { |
2347 | journal_default_metrics(metrics, f->fd); | |
2348 | f->metrics = *metrics; | |
2349 | } else if (template) | |
2350 | f->metrics = template->metrics; | |
2351 | ||
cec736d2 LP |
2352 | r = journal_file_refresh_header(f); |
2353 | if (r < 0) | |
2354 | goto fail; | |
2355 | } | |
2356 | ||
feb12d3e | 2357 | #ifdef HAVE_GCRYPT |
baed47c3 | 2358 | r = journal_file_hmac_setup(f); |
14d10188 LP |
2359 | if (r < 0) |
2360 | goto fail; | |
feb12d3e | 2361 | #endif |
14d10188 | 2362 | |
cec736d2 | 2363 | if (newly_created) { |
de190aef | 2364 | r = journal_file_setup_field_hash_table(f); |
cec736d2 LP |
2365 | if (r < 0) |
2366 | goto fail; | |
2367 | ||
de190aef | 2368 | r = journal_file_setup_data_hash_table(f); |
cec736d2 LP |
2369 | if (r < 0) |
2370 | goto fail; | |
7560fffc | 2371 | |
feb12d3e | 2372 | #ifdef HAVE_GCRYPT |
7560fffc LP |
2373 | r = journal_file_append_first_tag(f); |
2374 | if (r < 0) | |
2375 | goto fail; | |
feb12d3e | 2376 | #endif |
cec736d2 LP |
2377 | } |
2378 | ||
de190aef | 2379 | r = journal_file_map_field_hash_table(f); |
cec736d2 LP |
2380 | if (r < 0) |
2381 | goto fail; | |
2382 | ||
de190aef | 2383 | r = journal_file_map_data_hash_table(f); |
cec736d2 LP |
2384 | if (r < 0) |
2385 | goto fail; | |
2386 | ||
0559d3a5 | 2387 | *ret = f; |
cec736d2 LP |
2388 | return 0; |
2389 | ||
2390 | fail: | |
2391 | journal_file_close(f); | |
2392 | ||
2393 | return r; | |
2394 | } | |
0ac38b70 | 2395 | |
baed47c3 | 2396 | int journal_file_rotate(JournalFile **f, bool compress, bool seal) { |
0ac38b70 LP |
2397 | char *p; |
2398 | size_t l; | |
2399 | JournalFile *old_file, *new_file = NULL; | |
2400 | int r; | |
2401 | ||
2402 | assert(f); | |
2403 | assert(*f); | |
2404 | ||
2405 | old_file = *f; | |
2406 | ||
2407 | if (!old_file->writable) | |
2408 | return -EINVAL; | |
2409 | ||
2410 | if (!endswith(old_file->path, ".journal")) | |
2411 | return -EINVAL; | |
2412 | ||
2413 | l = strlen(old_file->path); | |
2414 | ||
9447a7f1 | 2415 | p = new(char, l + 1 + 32 + 1 + 16 + 1 + 16 + 1); |
0ac38b70 LP |
2416 | if (!p) |
2417 | return -ENOMEM; | |
2418 | ||
2419 | memcpy(p, old_file->path, l - 8); | |
2420 | p[l-8] = '@'; | |
2421 | sd_id128_to_string(old_file->header->seqnum_id, p + l - 8 + 1); | |
2422 | snprintf(p + l - 8 + 1 + 32, 1 + 16 + 1 + 16 + 8 + 1, | |
2423 | "-%016llx-%016llx.journal", | |
fb0951b0 LP |
2424 | (unsigned long long) le64toh((*f)->header->head_entry_seqnum), |
2425 | (unsigned long long) le64toh((*f)->header->head_entry_realtime)); | |
0ac38b70 LP |
2426 | |
2427 | r = rename(old_file->path, p); | |
2428 | free(p); | |
2429 | ||
2430 | if (r < 0) | |
2431 | return -errno; | |
2432 | ||
ccdbaf91 | 2433 | old_file->header->state = STATE_ARCHIVED; |
0ac38b70 | 2434 | |
baed47c3 | 2435 | r = journal_file_open(old_file->path, old_file->flags, old_file->mode, compress, seal, NULL, old_file->mmap, old_file, &new_file); |
0ac38b70 LP |
2436 | journal_file_close(old_file); |
2437 | ||
2438 | *f = new_file; | |
2439 | return r; | |
2440 | } | |
2441 | ||
9447a7f1 LP |
2442 | int journal_file_open_reliably( |
2443 | const char *fname, | |
2444 | int flags, | |
2445 | mode_t mode, | |
7560fffc | 2446 | bool compress, |
baed47c3 | 2447 | bool seal, |
4a92baf3 | 2448 | JournalMetrics *metrics, |
27370278 | 2449 | MMapCache *mmap_cache, |
9447a7f1 LP |
2450 | JournalFile *template, |
2451 | JournalFile **ret) { | |
2452 | ||
2453 | int r; | |
2454 | size_t l; | |
2455 | char *p; | |
2456 | ||
baed47c3 | 2457 | r = journal_file_open(fname, flags, mode, compress, seal, |
27370278 | 2458 | metrics, mmap_cache, template, ret); |
0071d9f1 LP |
2459 | if (r != -EBADMSG && /* corrupted */ |
2460 | r != -ENODATA && /* truncated */ | |
2461 | r != -EHOSTDOWN && /* other machine */ | |
a1a1898f LP |
2462 | r != -EPROTONOSUPPORT && /* incompatible feature */ |
2463 | r != -EBUSY && /* unclean shutdown */ | |
2464 | r != -ESHUTDOWN /* already archived */) | |
9447a7f1 LP |
2465 | return r; |
2466 | ||
2467 | if ((flags & O_ACCMODE) == O_RDONLY) | |
2468 | return r; | |
2469 | ||
2470 | if (!(flags & O_CREAT)) | |
2471 | return r; | |
2472 | ||
7560fffc LP |
2473 | if (!endswith(fname, ".journal")) |
2474 | return r; | |
2475 | ||
5c70eab4 LP |
2476 | /* The file is corrupted. Rotate it away and try it again (but only once) */ |
2477 | ||
9447a7f1 LP |
2478 | l = strlen(fname); |
2479 | if (asprintf(&p, "%.*s@%016llx-%016llx.journal~", | |
2480 | (int) (l-8), fname, | |
2481 | (unsigned long long) now(CLOCK_REALTIME), | |
2482 | random_ull()) < 0) | |
2483 | return -ENOMEM; | |
2484 | ||
2485 | r = rename(fname, p); | |
2486 | free(p); | |
2487 | if (r < 0) | |
2488 | return -errno; | |
2489 | ||
a1a1898f | 2490 | log_warning("File %s corrupted or uncleanly shut down, renaming and replacing.", fname); |
9447a7f1 | 2491 | |
baed47c3 | 2492 | return journal_file_open(fname, flags, mode, compress, seal, |
27370278 | 2493 | metrics, mmap_cache, template, ret); |
9447a7f1 LP |
2494 | } |
2495 | ||
cf244689 LP |
2496 | |
2497 | int journal_file_copy_entry(JournalFile *from, JournalFile *to, Object *o, uint64_t p, uint64_t *seqnum, Object **ret, uint64_t *offset) { | |
2498 | uint64_t i, n; | |
2499 | uint64_t q, xor_hash = 0; | |
2500 | int r; | |
2501 | EntryItem *items; | |
2502 | dual_timestamp ts; | |
2503 | ||
2504 | assert(from); | |
2505 | assert(to); | |
2506 | assert(o); | |
2507 | assert(p); | |
2508 | ||
2509 | if (!to->writable) | |
2510 | return -EPERM; | |
2511 | ||
2512 | ts.monotonic = le64toh(o->entry.monotonic); | |
2513 | ts.realtime = le64toh(o->entry.realtime); | |
2514 | ||
2515 | if (to->tail_entry_monotonic_valid && | |
2516 | ts.monotonic < le64toh(to->header->tail_entry_monotonic)) | |
2517 | return -EINVAL; | |
2518 | ||
cf244689 LP |
2519 | n = journal_file_entry_n_items(o); |
2520 | items = alloca(sizeof(EntryItem) * n); | |
2521 | ||
2522 | for (i = 0; i < n; i++) { | |
4fd052ae FC |
2523 | uint64_t l, h; |
2524 | le64_t le_hash; | |
cf244689 LP |
2525 | size_t t; |
2526 | void *data; | |
2527 | Object *u; | |
2528 | ||
2529 | q = le64toh(o->entry.items[i].object_offset); | |
2530 | le_hash = o->entry.items[i].hash; | |
2531 | ||
2532 | r = journal_file_move_to_object(from, OBJECT_DATA, q, &o); | |
2533 | if (r < 0) | |
2534 | return r; | |
2535 | ||
2536 | if (le_hash != o->data.hash) | |
2537 | return -EBADMSG; | |
2538 | ||
2539 | l = le64toh(o->object.size) - offsetof(Object, data.payload); | |
2540 | t = (size_t) l; | |
2541 | ||
2542 | /* We hit the limit on 32bit machines */ | |
2543 | if ((uint64_t) t != l) | |
2544 | return -E2BIG; | |
2545 | ||
2546 | if (o->object.flags & OBJECT_COMPRESSED) { | |
2547 | #ifdef HAVE_XZ | |
2548 | uint64_t rsize; | |
2549 | ||
2550 | if (!uncompress_blob(o->data.payload, l, &from->compress_buffer, &from->compress_buffer_size, &rsize)) | |
2551 | return -EBADMSG; | |
2552 | ||
2553 | data = from->compress_buffer; | |
2554 | l = rsize; | |
2555 | #else | |
2556 | return -EPROTONOSUPPORT; | |
2557 | #endif | |
2558 | } else | |
2559 | data = o->data.payload; | |
2560 | ||
2561 | r = journal_file_append_data(to, data, l, &u, &h); | |
2562 | if (r < 0) | |
2563 | return r; | |
2564 | ||
2565 | xor_hash ^= le64toh(u->data.hash); | |
2566 | items[i].object_offset = htole64(h); | |
2567 | items[i].hash = u->data.hash; | |
2568 | ||
2569 | r = journal_file_move_to_object(from, OBJECT_ENTRY, p, &o); | |
2570 | if (r < 0) | |
2571 | return r; | |
2572 | } | |
2573 | ||
2574 | return journal_file_append_entry_internal(to, &ts, xor_hash, items, n, seqnum, ret, offset); | |
2575 | } | |
babfc091 LP |
2576 | |
2577 | void journal_default_metrics(JournalMetrics *m, int fd) { | |
2578 | uint64_t fs_size = 0; | |
2579 | struct statvfs ss; | |
a7bc2c2a | 2580 | char a[FORMAT_BYTES_MAX], b[FORMAT_BYTES_MAX], c[FORMAT_BYTES_MAX], d[FORMAT_BYTES_MAX]; |
babfc091 LP |
2581 | |
2582 | assert(m); | |
2583 | assert(fd >= 0); | |
2584 | ||
2585 | if (fstatvfs(fd, &ss) >= 0) | |
2586 | fs_size = ss.f_frsize * ss.f_blocks; | |
2587 | ||
2588 | if (m->max_use == (uint64_t) -1) { | |
2589 | ||
2590 | if (fs_size > 0) { | |
2591 | m->max_use = PAGE_ALIGN(fs_size / 10); /* 10% of file system size */ | |
2592 | ||
2593 | if (m->max_use > DEFAULT_MAX_USE_UPPER) | |
2594 | m->max_use = DEFAULT_MAX_USE_UPPER; | |
2595 | ||
2596 | if (m->max_use < DEFAULT_MAX_USE_LOWER) | |
2597 | m->max_use = DEFAULT_MAX_USE_LOWER; | |
2598 | } else | |
2599 | m->max_use = DEFAULT_MAX_USE_LOWER; | |
2600 | } else { | |
2601 | m->max_use = PAGE_ALIGN(m->max_use); | |
2602 | ||
2603 | if (m->max_use < JOURNAL_FILE_SIZE_MIN*2) | |
2604 | m->max_use = JOURNAL_FILE_SIZE_MIN*2; | |
2605 | } | |
2606 | ||
2607 | if (m->max_size == (uint64_t) -1) { | |
2608 | m->max_size = PAGE_ALIGN(m->max_use / 8); /* 8 chunks */ | |
2609 | ||
2610 | if (m->max_size > DEFAULT_MAX_SIZE_UPPER) | |
2611 | m->max_size = DEFAULT_MAX_SIZE_UPPER; | |
2612 | } else | |
2613 | m->max_size = PAGE_ALIGN(m->max_size); | |
2614 | ||
2615 | if (m->max_size < JOURNAL_FILE_SIZE_MIN) | |
2616 | m->max_size = JOURNAL_FILE_SIZE_MIN; | |
2617 | ||
2618 | if (m->max_size*2 > m->max_use) | |
2619 | m->max_use = m->max_size*2; | |
2620 | ||
2621 | if (m->min_size == (uint64_t) -1) | |
2622 | m->min_size = JOURNAL_FILE_SIZE_MIN; | |
2623 | else { | |
2624 | m->min_size = PAGE_ALIGN(m->min_size); | |
2625 | ||
2626 | if (m->min_size < JOURNAL_FILE_SIZE_MIN) | |
2627 | m->min_size = JOURNAL_FILE_SIZE_MIN; | |
2628 | ||
2629 | if (m->min_size > m->max_size) | |
2630 | m->max_size = m->min_size; | |
2631 | } | |
2632 | ||
2633 | if (m->keep_free == (uint64_t) -1) { | |
2634 | ||
2635 | if (fs_size > 0) { | |
2636 | m->keep_free = PAGE_ALIGN(fs_size / 20); /* 5% of file system size */ | |
2637 | ||
2638 | if (m->keep_free > DEFAULT_KEEP_FREE_UPPER) | |
2639 | m->keep_free = DEFAULT_KEEP_FREE_UPPER; | |
2640 | ||
2641 | } else | |
2642 | m->keep_free = DEFAULT_KEEP_FREE; | |
2643 | } | |
2644 | ||
2b43f939 LP |
2645 | log_debug("Fixed max_use=%s max_size=%s min_size=%s keep_free=%s", |
2646 | format_bytes(a, sizeof(a), m->max_use), | |
2647 | format_bytes(b, sizeof(b), m->max_size), | |
2648 | format_bytes(c, sizeof(c), m->min_size), | |
2649 | format_bytes(d, sizeof(d), m->keep_free)); | |
babfc091 | 2650 | } |
08984293 LP |
2651 | |
2652 | int journal_file_get_cutoff_realtime_usec(JournalFile *f, usec_t *from, usec_t *to) { | |
08984293 LP |
2653 | assert(f); |
2654 | assert(from || to); | |
2655 | ||
2656 | if (from) { | |
162566a4 LP |
2657 | if (f->header->head_entry_realtime == 0) |
2658 | return -ENOENT; | |
08984293 | 2659 | |
162566a4 | 2660 | *from = le64toh(f->header->head_entry_realtime); |
08984293 LP |
2661 | } |
2662 | ||
2663 | if (to) { | |
162566a4 LP |
2664 | if (f->header->tail_entry_realtime == 0) |
2665 | return -ENOENT; | |
08984293 | 2666 | |
162566a4 | 2667 | *to = le64toh(f->header->tail_entry_realtime); |
08984293 LP |
2668 | } |
2669 | ||
2670 | return 1; | |
2671 | } | |
2672 | ||
2673 | int journal_file_get_cutoff_monotonic_usec(JournalFile *f, sd_id128_t boot_id, usec_t *from, usec_t *to) { | |
2674 | char t[9+32+1] = "_BOOT_ID="; | |
2675 | Object *o; | |
2676 | uint64_t p; | |
2677 | int r; | |
2678 | ||
2679 | assert(f); | |
2680 | assert(from || to); | |
2681 | ||
2682 | sd_id128_to_string(boot_id, t + 9); | |
2683 | ||
2684 | r = journal_file_find_data_object(f, t, strlen(t), &o, &p); | |
2685 | if (r <= 0) | |
2686 | return r; | |
2687 | ||
2688 | if (le64toh(o->data.n_entries) <= 0) | |
2689 | return 0; | |
2690 | ||
2691 | if (from) { | |
2692 | r = journal_file_move_to_object(f, OBJECT_ENTRY, le64toh(o->data.entry_offset), &o); | |
2693 | if (r < 0) | |
2694 | return r; | |
2695 | ||
2696 | *from = le64toh(o->entry.monotonic); | |
2697 | } | |
2698 | ||
2699 | if (to) { | |
2700 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
2701 | if (r < 0) | |
2702 | return r; | |
2703 | ||
2704 | r = generic_array_get_plus_one(f, | |
2705 | le64toh(o->data.entry_offset), | |
2706 | le64toh(o->data.entry_array_offset), | |
2707 | le64toh(o->data.n_entries)-1, | |
2708 | &o, NULL); | |
2709 | if (r <= 0) | |
2710 | return r; | |
2711 | ||
2712 | *to = le64toh(o->entry.monotonic); | |
2713 | } | |
2714 | ||
2715 | return 1; | |
2716 | } | |
dca6219e | 2717 | |
fb0951b0 | 2718 | bool journal_file_rotate_suggested(JournalFile *f, usec_t max_file_usec) { |
dca6219e LP |
2719 | assert(f); |
2720 | ||
2721 | /* If we gained new header fields we gained new features, | |
2722 | * hence suggest a rotation */ | |
361f9cbc LP |
2723 | if (le64toh(f->header->header_size) < sizeof(Header)) { |
2724 | log_debug("%s uses an outdated header, suggesting rotation.", f->path); | |
dca6219e | 2725 | return true; |
361f9cbc | 2726 | } |
dca6219e LP |
2727 | |
2728 | /* Let's check if the hash tables grew over a certain fill | |
2729 | * level (75%, borrowing this value from Java's hash table | |
2730 | * implementation), and if so suggest a rotation. To calculate | |
2731 | * the fill level we need the n_data field, which only exists | |
2732 | * in newer versions. */ | |
2733 | ||
2734 | if (JOURNAL_HEADER_CONTAINS(f->header, n_data)) | |
361f9cbc LP |
2735 | if (le64toh(f->header->n_data) * 4ULL > (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)) * 3ULL) { |
2736 | log_debug("Data hash table of %s has a fill level at %.1f (%llu of %llu items, %llu file size, %llu bytes per hash table item), suggesting rotation.", | |
2737 | f->path, | |
2738 | 100.0 * (double) le64toh(f->header->n_data) / ((double) (le64toh(f->header->data_hash_table_size) / sizeof(HashItem))), | |
2739 | (unsigned long long) le64toh(f->header->n_data), | |
2740 | (unsigned long long) (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)), | |
2741 | (unsigned long long) (f->last_stat.st_size), | |
2742 | (unsigned long long) (f->last_stat.st_size / le64toh(f->header->n_data))); | |
dca6219e | 2743 | return true; |
361f9cbc | 2744 | } |
dca6219e LP |
2745 | |
2746 | if (JOURNAL_HEADER_CONTAINS(f->header, n_fields)) | |
361f9cbc LP |
2747 | if (le64toh(f->header->n_fields) * 4ULL > (le64toh(f->header->field_hash_table_size) / sizeof(HashItem)) * 3ULL) { |
2748 | log_debug("Field hash table of %s has a fill level at %.1f (%llu of %llu items), suggesting rotation.", | |
2749 | f->path, | |
2750 | 100.0 * (double) le64toh(f->header->n_fields) / ((double) (le64toh(f->header->field_hash_table_size) / sizeof(HashItem))), | |
2751 | (unsigned long long) le64toh(f->header->n_fields), | |
2752 | (unsigned long long) (le64toh(f->header->field_hash_table_size) / sizeof(HashItem))); | |
dca6219e | 2753 | return true; |
361f9cbc | 2754 | } |
dca6219e | 2755 | |
0598fd4a LP |
2756 | /* Are the data objects properly indexed by field objects? */ |
2757 | if (JOURNAL_HEADER_CONTAINS(f->header, n_data) && | |
2758 | JOURNAL_HEADER_CONTAINS(f->header, n_fields) && | |
2759 | le64toh(f->header->n_data) > 0 && | |
2760 | le64toh(f->header->n_fields) == 0) | |
2761 | return true; | |
2762 | ||
fb0951b0 LP |
2763 | if (max_file_usec > 0) { |
2764 | usec_t t, h; | |
2765 | ||
2766 | h = le64toh(f->header->head_entry_realtime); | |
2767 | t = now(CLOCK_REALTIME); | |
2768 | ||
2769 | if (h > 0 && t > h + max_file_usec) | |
2770 | return true; | |
2771 | } | |
2772 | ||
dca6219e LP |
2773 | return false; |
2774 | } |